diff --git a/docs/en/04_Changelogs/4.0.0.md b/docs/en/04_Changelogs/4.0.0.md
index b933859bf..7838f8722 100644
--- a/docs/en/04_Changelogs/4.0.0.md
+++ b/docs/en/04_Changelogs/4.0.0.md
@@ -1229,6 +1229,7 @@ After (`mysite/_config/config.yml`):
 * Removed `dev/jstests/` controller (no replacement)
 * Removed `TestRunner` and `JSTestRunner` APIs
 * Removed `PhpUnitWrapper`, `PhpUnitWrapper_3_4`, `PhpUnitWrapper_3_5`, `PhpUnitWrapper_Generic`, `SapphireTestSuite` APIs
+* Removed `SapphireTestReporter` and `CliTestReporter`
 * Removed `SapphireTest::skipTest()`, use `markTestSkipped()` in a `setUp()` method instead
 * Removed the `History.js` javascript library.
 * `debugmethods` querystring argument has been removed from debugging.
diff --git a/src/Dev/CliTestReporter.php b/src/Dev/CliTestReporter.php
deleted file mode 100644
index 19a4c2362..000000000
--- a/src/Dev/CliTestReporter.php
+++ /dev/null
@@ -1,165 +0,0 @@
-<?php
-
-namespace SilverStripe\Dev;
-
-use PHPUnit_Framework_Test;
-
-if (!class_exists('SilverStripe\\Dev\\SapphireTestReporter')) {
-    return;
-}
-
-/**
- * Test reporter optimised for CLI (ie, plain-text) output
- */
-class CliTestReporter extends SapphireTestReporter
-{
-
-    /**
-     * Display error bar if it exists
-     */
-    public function writeResults()
-    {
-        $passCount = 0;
-        $failCount = $this->currentSession['failures'];
-        $testCount = 0;
-        $incompleteCount = $this->currentSession['incomplete'];
-        $errorCount = $this->currentSession['errors'];
-
-        foreach ($this->suiteResults['suites'] as $suite) {
-            foreach ($suite['tests'] as $test) {
-                $testCount++;
-                switch ($test['status']) {
-                    case TEST_INCOMPLETE: {
-                        $incompleteCount++;
-                        break;
-                    }
-                    case TEST_SUCCESS: {
-                        $passCount++;
-                        break;
-                    }
-                    case TEST_ERROR: {
-                        $errorCount++;
-                        break;
-                    }
-                    default: {
-                        $failCount++;
-                        break;
-                    }
-                }
-            }
-        }
-
-        echo "\n\n";
-        $breakages = $errorCount + $failCount;
-        if ($breakages == 0 && $incompleteCount > 0) {
-            echo CLI::text(" OK, BUT INCOMPLETE TESTS! ", "black", "yellow");
-        } elseif ($breakages == 0) {
-            echo CLI::text(" ALL TESTS PASS ", "black", "green");
-        } else {
-            echo CLI::text(" AT LEAST ONE FAILURE ", "black", "red");
-        }
-
-        echo sprintf(
-            "\n\n%d tests run: %s, %s, and %s\n",
-            $testCount,
-            CLI::text("$passCount passes"),
-            CLI::text("$breakages failures"),
-            CLI::text("$incompleteCount incomplete")
-        );
-
-        echo "Maximum memory usage: " . number_format(memory_get_peak_usage()/(1024*1024), 1) . "M\n\n";
-
-        // Use sake dev/tests/all --showslow to show slow tests
-        if ((isset($_GET['args']) && is_array($_GET['args']) && in_array('--showslow', $_GET['args']))
-                || isset($_GET['showslow'])) {
-            $avgSpeed = round(array_sum($this->testSpeeds) / count($this->testSpeeds), 3);
-            echo "Slow tests (more than the average $avgSpeed seconds):\n";
-
-            arsort($this->testSpeeds);
-            foreach ($this->testSpeeds as $k => $v) {
-                // Ignore below-average speeds
-                if ($v < $avgSpeed) {
-                    break;
-                }
-
-                echo " - $k: " . round($v, 3) . "\n";
-            }
-        }
-        echo "\n";
-    }
-
-    public function endTest(PHPUnit_Framework_Test $test, $time)
-    {
-        // Status indicator, a la PHPUnit
-        switch ($this->currentTest['status']) {
-            case TEST_FAILURE:
-                echo CLI::text("F", "red", null, true);
-
-                break;
-            case TEST_ERROR:
-                echo CLI::text("E", "red", null, true);
-
-                break;
-            case TEST_INCOMPLETE:
-                echo CLI::text("I", "yellow");
-
-                break;
-            case TEST_SUCCESS:
-                echo CLI::text(".", "green");
-
-                break;
-            default:
-                echo CLI::text("?", "yellow");
-
-                break;
-        }
-
-        static $colCount = 0;
-        $colCount++;
-        if ($colCount % 80 == 0) {
-            echo " - $colCount\n";
-        }
-
-        $this->writeTest($this->currentTest);
-        parent::endTest($test, $time);
-    }
-
-    protected function addStatus($status, $message, $exception, $trace)
-    {
-        if (!$this->currentTest && !$this->currentSuite) {
-            // Log non-test errors immediately
-            $statusResult = array(
-                'status' => $status,
-                'message' => $message,
-                'exception' => $exception,
-                'trace' => $trace
-            );
-            $this->writeTest($statusResult);
-        }
-        parent::addStatus($status, $message, $exception, $trace);
-    }
-
-    protected function writeTest($test)
-    {
-        if ($test['status'] != TEST_SUCCESS) {
-            $filteredTrace = array();
-            foreach ($test['trace'] as $item) {
-                if (isset($item['file'])
-                        && strpos($item['file'], 'PHPUnit/Framework') === false
-                        && !isset($item['class'])) {
-                    $filteredTrace[] = $item;
-                }
-
-                if (isset($item['class']) && isset($item['function']) && $item['class'] == 'PHPUnit_Framework_TestSuite'
-                        && $item['function'] == 'run') {
-                    break;
-                }
-            }
-
-            $color = ($test['status'] == 2) ? 'yellow' : 'red';
-            echo "\n" . CLI::text($test['name'] . "\n". $test['message'] . "\n", $color, null);
-            echo Backtrace::get_rendered_backtrace($filteredTrace, true);
-            echo "--------------------\n";
-        }
-    }
-}
diff --git a/src/Dev/SapphireTestReporter.php b/src/Dev/SapphireTestReporter.php
deleted file mode 100644
index 93811b6cd..000000000
--- a/src/Dev/SapphireTestReporter.php
+++ /dev/null
@@ -1,513 +0,0 @@
-<?php
-
-namespace SilverStripe\Dev;
-
-use PHPUnit_Framework_TestListener;
-use Benchmark_Timer;
-use PHPUnit_Framework_TestSuite;
-use PHPUnit_Framework_Test;
-use PHPUnit_Framework_AssertionFailedError;
-use Exception;
-use PHPUnit_Framework_TestCase;
-
-/**#@+
- * @var int
- */
-/**
- * Failure test status constant
- */
-define('TEST_FAILURE', -1);
-/**
- * Error test status constant
- */
-define('TEST_ERROR', 0);
-/**
- * Success test status constant
- */
-define('TEST_SUCCESS', 1);
-/**
- * Incomplete test status constant
- */
-define('TEST_INCOMPLETE', 2);
-/**#@-*/
-
-/**
- * Gathers details about PHPUnit2 test suites as they
- * are been executed. This does not actually format any output
- * but simply gathers extended information about the overall
- * results of all suites & their tests for use elsewhere.
- *
- * Changelog:
- *  0.6 First created [David Spurr]
- *  0.7 Added fix to getTestException provided [Glen Ogilvie]
- *
- * @version 0.7 2006-03-12
- * @author David Spurr
- */
-class SapphireTestReporter implements PHPUnit_Framework_TestListener
-{
-    /**
-     * Holds array of suites and total number of tests run
-     * @var array
-     */
-    protected $suiteResults;
-
-    /**
-     * Holds data of current suite that is been run
-     * @var array
-     */
-    protected $currentSuite;
-
-    /**
-     * Holds data of current test that is been run
-     * @var array
-     */
-    protected $currentTest;
-
-    /**
-     * Whether PEAR Benchmark_Timer is available for timing
-     * @var boolean
-     */
-    protected $hasTimer;
-
-    /**
-     * Holds the PEAR Benchmark_Timer object
-     *
-     * @var Benchmark_Timer
-     */
-    protected $timer;
-
-    /**
-     * @var int
-     */
-    protected $startTestTime;
-
-    /**
-     * An array of all the test speeds
-     *
-     * @var array
-     */
-    protected $testSpeeds = array();
-
-    /**
-     * Errors not belonging to a test or suite
-     *
-     * @var array
-     */
-    protected $currentSession = array();
-
-    /**
-     * Constructor, checks to see availability of PEAR Benchmark_Timer and
-     * sets up basic properties
-     */
-    public function __construct()
-    {
-        @include_once 'Benchmark/Timer.php';
-        if (class_exists('Benchmark_Timer')) {
-            $this->timer = new Benchmark_Timer();
-            $this->hasTimer = true;
-        } else {
-            $this->hasTimer = false;
-        }
-
-        $this->suiteResults = array(
-            'suites'      => array(),         // array of suites run
-            'hasTimer'    => $this->hasTimer, // availability of PEAR Benchmark_Timer
-            'totalTests'  => 0                // total number of tests run
-        );
-
-        $this->currentSession = array(
-            'errors'     => 0,       // number of tests with errors (including setup errors)
-            'failures'   => 0,       // number of tests which failed
-            'incomplete' => 0,       // number of tests that were not completed correctly
-            'error'      => array(), // Any error encountered outside of suites
-        );
-    }
-
-    /**
-     * Returns the suite results
-     *
-     * @access public
-     * @return array Suite results
-     */
-    public function getSuiteResults()
-    {
-        return $this->suiteResults;
-    }
-
-    /**
-     * Sets up the container for result details of the current test suite when
-     * each suite is first run
-     *
-     * @param PHPUnit_Framework_TestSuite $suite the suite that is been run
-     */
-    public function startTestSuite(PHPUnit_Framework_TestSuite $suite)
-    {
-        $this->endCurrentTestSuite();
-        $this->currentSuite = array(
-            'suite'      => $suite,  // the test suite
-            'tests'      => array(), // the tests in the suite
-            'errors'     => 0,       // number of tests with errors (including setup errors)
-            'failures'   => 0,       // number of tests which failed
-            'incomplete' => 0,       // number of tests that were not completed correctly
-            'error'      => null,    // Any error encountered during setup of the test suite
-        );
-    }
-
-    /**
-     * Sets up the container for result details of the current test when each
-     * test is first run
-     *
-     * @param PHPUnit_Framework_Test $test the test that is being run
-     */
-    public function startTest(PHPUnit_Framework_Test $test)
-    {
-        $this->endCurrentTest();
-
-        $this->startTestTime = microtime(true);
-        $this->currentTest = array(
-            // the name of the test (without the suite name)
-            'name'        => $this->descriptiveTestName($test),
-            // execution time of the test
-            'timeElapsed' => 0,
-            // status of the test execution
-            'status'      => TEST_SUCCESS,
-            // user message of test result
-            'message'     => '',
-            // original caught exception thrown by test upon failure/error
-            'exception'   => null,
-            // Stacktrace used for exception handling
-            'trace'       => null,
-            // a unique ID for this test (used for identification purposes in results)
-            'uid'         => md5(microtime())
-        );
-        if ($this->hasTimer) {
-            $this->timer->start();
-        }
-    }
-
-    /**
-     * Logs the specified status to the current test, or if no test is currently
-     * run, to the test suite.
-     * @param integer $status Status code
-     * @param string $message Message to log
-     * @param string $exception Exception body related to this message
-     * @param array $trace Stacktrace
-     */
-    protected function addStatus($status, $message, $exception, $trace)
-    {
-        // Build status body to be saved
-        $statusResult = array(
-            'status' => $status,
-            'message' => $message,
-            'exception' => $exception,
-            'trace' => $trace
-        );
-
-        // Log either to current test or suite record
-        if ($this->currentTest) {
-            $this->currentTest = array_merge($this->currentTest, $statusResult);
-        } elseif ($this->currentSuite) {
-            $this->currentSuite['error'] = $statusResult;
-        } else {
-            $this->currentSession['error'][] = $statusResult;
-        }
-    }
-
-    /**
-     * Adds the failure detail to the current test and increases the failure
-     * count for the current suite
-     *
-     * @param PHPUnit_Framework_Test $test current test that is being run
-     * @param PHPUnit_Framework_AssertionFailedError $e PHPUnit error
-     * @param int $time
-     */
-    public function addFailure(PHPUnit_Framework_Test $test, PHPUnit_Framework_AssertionFailedError $e, $time)
-    {
-        if ($this->currentSuite) {
-            $this->currentSuite['failures']++;
-        } else {
-            $this->currentSession['failures']++;
-        }
-        $this->addStatus(TEST_FAILURE, $e->toString(), $this->getTestException($test, $e), $e->getTrace());
-    }
-
-    /**
-     * Adds the error detail to the current test and increases the error
-     * count for the current suite
-     *
-     * @param PHPUnit_Framework_Test $test current test that is being run
-     * @param Exception $e PHPUnit error
-     * @param int $time
-     */
-    public function addError(PHPUnit_Framework_Test $test, Exception $e, $time)
-    {
-        if ($this->currentSuite) {
-            $this->currentSuite['errors']++;
-        } else {
-            $this->currentSession['errors']++;
-        }
-        $this->addStatus(TEST_ERROR, $e->getMessage(), $this->getTestException($test, $e), $e->getTrace());
-    }
-
-    /**
-     * Adds the test incomplete detail to the current test and increases the incomplete
-     * count for the current suite
-     *
-     * @param PHPUnit_Framework_Test $test current test that is being run
-     * @param Exception $e PHPUnit error
-     */
-    public function addIncompleteTest(PHPUnit_Framework_Test $test, Exception $e, $time)
-    {
-        if ($this->currentSuite) {
-            $this->currentSuite['incomplete']++;
-        } else {
-            $this->currentSession['incomplete']++;
-        }
-        $this->addStatus(TEST_INCOMPLETE, $e->getMessage(), $this->getTestException($test, $e), $e->getTrace());
-    }
-
-    /**
-     * Not used
-     *
-     * @param PHPUnit_Framework_Test $test
-     * @param Exception $e
-     * @param int $time
-     */
-    public function addSkippedTest(PHPUnit_Framework_Test $test, Exception $e, $time)
-    {
-        // not implemented
-    }
-
-
-    /**
-     * Cleanly end the current test
-     */
-    protected function endCurrentTest()
-    {
-        if (!$this->currentTest || !$this->currentSuite) {
-            return;
-        }
-
-        // Time the current test
-        $testDuration = microtime(true) - $this->startTestTime;
-        $this->testSpeeds[$this->currentSuite['suite']->getName() . '.' . $this->currentTest['name']] = $testDuration;
-        if ($this->hasTimer) {
-            $this->timer->stop();
-            $this->currentTest['timeElapsed'] = $this->timer->timeElapsed();
-        }
-
-        // Save and reset current state
-        array_push($this->currentSuite['tests'], $this->currentTest);
-        $this->currentTest = null;
-    }
-
-    /**
-     * Upon completion of a test, records the execution time (if available) and adds the test to
-     * the tests performed in the current suite.
-     *
-     * @param PHPUnit_Framework_Test $test Current test that is being run
-     * @param int $time
-     */
-    public function endTest(PHPUnit_Framework_Test $test, $time)
-    {
-        $this->endCurrentTest();
-        if (method_exists($test, 'getActualOutput')) {
-            $output = $test->getActualOutput();
-            if ($output) {
-                echo "\nOutput:\n$output";
-            }
-        }
-    }
-
-    /**
-     * Cleanly end the current test suite
-     */
-    protected function endCurrentTestSuite()
-    {
-        if (!$this->currentSuite) {
-            return;
-        }
-
-        // Ensure any current test is ended along with the current suite
-        $this->endCurrentTest();
-
-        // Save and reset current state
-        array_push($this->suiteResults['suites'], $this->currentSuite);
-        $this->currentSuite = null;
-    }
-
-    /**
-     * Upon completion of a test suite adds the suite to the suties performed
-     *
-     * @param PHPUnit_Framework_TestSuite $suite current suite that is being run
-     */
-    public function endTestSuite(PHPUnit_Framework_TestSuite $suite)
-    {
-        if (strlen($suite->getName())) {
-            $this->endCurrentTestSuite();
-        }
-    }
-
-    /**
-     * Risky test.
-     *
-     * @param PHPUnit_Framework_Test $test
-     * @param Exception              $e
-     * @param float                  $time
-     * @since  Method available since Release 3.8.0
-     */
-    public function addRiskyTest(PHPUnit_Framework_Test $test, Exception $e, $time)
-    {
-        // Stub out to support PHPUnit 3.8
-    }
-
-    /**
-     * Tries to get the original exception thrown by the test on failure/error
-     * to enable us to give a bit more detail about the failure/error
-     *
-     * @param PHPUnit_Framework_Test $test current test that is being run
-     * @param Exception $e PHPUnit error
-     * @return array
-     */
-    private function getTestException(PHPUnit_Framework_Test $test, Exception $e)
-    {
-        // get the name of the testFile from the test
-        $testName = $this->descriptiveTestName($test);
-        $trace = $e->getTrace();
-        // loop through the exception trace to find the original exception
-        for ($i = 0; $i < count($trace); $i++) {
-            if (array_key_exists('file', $trace[$i])) {
-                if (stristr($trace[$i]['file'], $testName.'.php') != false) {
-                    return $trace[$i];
-                }
-            }
-            if (array_key_exists('file:protected', $trace[$i])) {
-                if (stristr($trace[$i]['file:protected'], $testName.'.php') != false) {
-                    return $trace[$i];
-                }
-            }
-        }
-        return array();
-    }
-
-    /**
-     * Writes a status message to the output stream in a user readable HTML format
-     * @param string $name Name of the object that generated the error
-     * @param string $message Message of the error
-     * @param array $trace Stacktrace
-     */
-    protected function writeResultError($name, $message, $trace)
-    {
-        echo "<div class=\"failure\"><h2 class=\"test-case\">&otimes; ". $this->testNameToPhrase($name) ."</h2>";
-        echo "<pre>".htmlentities($message, ENT_COMPAT, 'UTF-8')."</pre>";
-        echo Backtrace::get_rendered_backtrace($trace);
-        echo "</div>";
-    }
-
-    /**
-     * Display error bar if it exists
-     */
-    public function writeResults()
-    {
-        $passCount = 0;
-        $failCount = 0;
-        $testCount = 0;
-        $incompleteCount = 0;
-        $errorCount = 0; // Includes both suite and test level errors
-
-        // Ensure that the current suite is cleanly ended.
-        // A suite may not end correctly if there was an error during setUp
-        $this->endCurrentTestSuite();
-
-        // Write session errors
-        if ($this->currentSession['error']) {
-            $errorCount += $this->currentSession['errors'];
-            $failCount += $this->currentSession['failures'];
-            $incompleteCount += $this->currentSession['incomplete'];
-            foreach ($this->currentSession['error'] as $error) {
-                $this->writeResultError(
-                    'SilverStripe\\Control\\Session',
-                    $error['message'],
-                    $error['trace']
-                );
-            }
-        }
-
-        // Write suite errors
-        foreach ($this->suiteResults['suites'] as $suite) {
-            // Report suite error. In the case of fatal non-success messages
-            // These should be reported as errors. Failure/Success relate only
-            // to individual tests directly
-            if ($suite['error']) {
-                $errorCount++;
-                $this->writeResultError(
-                    $suite['suite']->getName(),
-                    $suite['error']['message'],
-                    $suite['error']['trace']
-                );
-            }
-
-            // Run through all tests in this suite
-            foreach ($suite['tests'] as $test) {
-                $testCount++;
-                switch ($test['status']) {
-                    case TEST_ERROR:
-                        $errorCount++;
-
-                        break;
-                    case TEST_INCOMPLETE:
-                        $incompleteCount++;
-
-                        break;
-                    case TEST_SUCCESS:
-                        $passCount++;
-
-                        break;
-                    case TEST_FAILURE:
-                        $failCount++;
-
-                        break;
-                }
-
-                // Report test error
-                if ($test['status'] != TEST_SUCCESS) {
-                    $this->writeResultError(
-                        $test['name'],
-                        $test['message'],
-                        $test['trace']
-                    );
-                }
-            }
-        }
-        $result = ($failCount || $errorCount) ? 'fail' : 'pass';
-        echo "<div class=\"status $result\">";
-        echo "<h2><span>$testCount</span> tests run: <span>$passCount</span> passes, <span>$failCount</span> failures,"
-            . " and <span>$incompleteCount</span> incomplete with <span>$errorCount</span> errors</h2>";
-        echo "</div>";
-    }
-
-    protected function testNameToPhrase($name)
-    {
-        return ucfirst(preg_replace("/([a-z])([A-Z])/", "$1 $2", $name));
-    }
-
-    /**
-     * Get name for this test
-     *
-     * @param PHPUnit_Framework_Test $test
-     * @return string
-     */
-    protected function descriptiveTestName(PHPUnit_Framework_Test $test)
-    {
-        if ($test instanceof PHPUnit_Framework_TestCase) {
-            $name = $test->toString();
-        } elseif (method_exists($test, 'getName')) {
-            $name = $test->getName();
-        } else {
-            $name = get_class($test);
-        }
-        // the name of the test (without the suite name)
-        return preg_replace('(\(.*\))', '', $name);
-    }
-}