diff --git a/Code/Mantid/Framework/MDAlgorithms/test/CreateMDWorkspaceTest.h b/Code/Mantid/Framework/MDAlgorithms/test/CreateMDWorkspaceTest.h
index 4ebce40c48eb..8ae827db3a08 100644
--- a/Code/Mantid/Framework/MDAlgorithms/test/CreateMDWorkspaceTest.h
+++ b/Code/Mantid/Framework/MDAlgorithms/test/CreateMDWorkspaceTest.h
@@ -79,10 +79,6 @@ class CreateMDWorkspaceTest : public CxxTest::TestSuite
 
   void do_test_exec(std::string Filename, bool lean, int MinRecursionDepth=0, int expectedNumMDBoxes=216)
   {
-    if (Filename != "")
-    {
-       if (Poco::File(Filename).exists()) Poco::File(Filename).remove();
-    }
 
 
     std::string wsName = "CreateMDWorkspaceTest_out";
@@ -102,6 +98,11 @@ class CreateMDWorkspaceTest : public CxxTest::TestSuite
     alg.setPropertyValue("Filename", Filename);
     alg.setPropertyValue("Memory", "1");
 
+    std::string fullName = alg.getPropertyValue("Filename");
+    if (fullName!="")
+      if(Poco::File(fullName).exists()) Poco::File(fullName).remove();
+
+
     TS_ASSERT_THROWS_NOTHING( alg.execute(); );
     TS_ASSERT( alg.isExecuted() );
 
diff --git a/Code/Mantid/Framework/MDAlgorithms/test/LoadMDTest.h b/Code/Mantid/Framework/MDAlgorithms/test/LoadMDTest.h
index d4a0f6814823..18e2a3579434 100644
--- a/Code/Mantid/Framework/MDAlgorithms/test/LoadMDTest.h
+++ b/Code/Mantid/Framework/MDAlgorithms/test/LoadMDTest.h
@@ -199,7 +199,7 @@ class LoadMDTest : public CxxTest::TestSuite
     TS_ASSERT_THROWS_NOTHING( saver.setProperty("InputWorkspace", "LoadMDTest_ws" ) );
     TS_ASSERT_THROWS_NOTHING( saver.setPropertyValue("Filename",  "LoadMDTest" + Strings::toString(nd) + ".nxs") );
 
-    // Retrieve the full path; delete any pre-existing file
+      // Retrieve the full path; delete any pre-existing file
     std::string filename = saver.getPropertyValue("Filename");
     if (Poco::File(filename).exists()) Poco::File(filename).remove();
 
diff --git a/Code/Mantid/Framework/MDAlgorithms/test/MergeMDFilesTest.h b/Code/Mantid/Framework/MDAlgorithms/test/MergeMDFilesTest.h
index a2af8083141f..565cc845f4cc 100644
--- a/Code/Mantid/Framework/MDAlgorithms/test/MergeMDFilesTest.h
+++ b/Code/Mantid/Framework/MDAlgorithms/test/MergeMDFilesTest.h
@@ -69,6 +69,13 @@ class MergeMDFilesTest : public CxxTest::TestSuite
     TS_ASSERT_THROWS_NOTHING( alg.setProperty("Filenames", filenames) );
     TS_ASSERT_THROWS_NOTHING( alg.setPropertyValue("OutputFilename", OutputFilename) );
     TS_ASSERT_THROWS_NOTHING( alg.setPropertyValue("OutputWorkspace", outWSName) );
+
+    // clean up possible rubbish from previous runs
+    std::string fullName = alg.getPropertyValue("OutputFilename");
+    if (fullName!="")
+      if(Poco::File(fullName).exists()) Poco::File(fullName).remove();
+
+
     TS_ASSERT_THROWS_NOTHING( alg.execute(); );
     TS_ASSERT( alg.isExecuted() );
     
diff --git a/Code/Mantid/Framework/MDAlgorithms/test/SaveMDTest.h b/Code/Mantid/Framework/MDAlgorithms/test/SaveMDTest.h
index 40d9b13a1acf..234a14f76fcd 100644
--- a/Code/Mantid/Framework/MDAlgorithms/test/SaveMDTest.h
+++ b/Code/Mantid/Framework/MDAlgorithms/test/SaveMDTest.h
@@ -69,7 +69,7 @@ class SaveMDTest : public CxxTest::TestSuite
 
   void do_test_exec(size_t numPerBox, std::string filename, bool MakeFileBacked = false, bool UpdateFileBackEnd = false)
   {
-    if (Poco::File(filename).exists()) Poco::File(filename).remove();
+   
     // Make a 1D MDEventWorkspace
     MDEventWorkspace1Lean::sptr ws = MDEventsTestHelper::makeMDEW<1>(10, 0.0, 10.0, numPerBox);
     // Make sure it is split
@@ -92,6 +92,12 @@ class SaveMDTest : public CxxTest::TestSuite
     TS_ASSERT_THROWS_NOTHING( alg.setPropertyValue("InputWorkspace", "SaveMDTest_ws") );
     TS_ASSERT_THROWS_NOTHING( alg.setPropertyValue("Filename", filename) );
     TS_ASSERT_THROWS_NOTHING( alg.setProperty("MakeFileBacked", MakeFileBacked) );
+
+    // clean up possible rubbish from the previous runs
+    std::string fullName = alg.getPropertyValue("Filename");
+    if (fullName!="")
+      if(Poco::File(fullName).exists()) Poco::File(fullName).remove();
+
     alg.execute();
     TS_ASSERT( alg.isExecuted() );
 
diff --git a/Code/Mantid/Framework/MDAlgorithms/test/SliceMDTest.h b/Code/Mantid/Framework/MDAlgorithms/test/SliceMDTest.h
index a72a0c8137d5..ea0042ab46a2 100644
--- a/Code/Mantid/Framework/MDAlgorithms/test/SliceMDTest.h
+++ b/Code/Mantid/Framework/MDAlgorithms/test/SliceMDTest.h
@@ -130,10 +130,7 @@ class SliceMDTest : public CxxTest::TestSuite
       bool willFail = false,
       std::string OutputFilename = "")
   {
-    if (OutputFilename != "")
-    {
-       if (Poco::File(OutputFilename).exists()) Poco::File(OutputFilename).remove();
-    }
+   
 
     SliceMD alg;
     TS_ASSERT_THROWS_NOTHING( alg.initialize() )
@@ -150,6 +147,10 @@ class SliceMDTest : public CxxTest::TestSuite
     TS_ASSERT_THROWS_NOTHING(alg.setPropertyValue("OutputWorkspace", "SliceMDTest_outWS"));
     TS_ASSERT_THROWS_NOTHING(alg.setPropertyValue("OutputFilename", OutputFilename));
 
+    std::string fullName = alg.getPropertyValue("OutputFilename");
+    if (fullName!="")
+      if(Poco::File(fullName).exists()) Poco::File(fullName).remove();
+
     TS_ASSERT_THROWS_NOTHING( alg.execute(); )
 
     if (willFail)
@@ -178,10 +179,7 @@ class SliceMDTest : public CxxTest::TestSuite
     // Clean up file
     out->getBoxController()->closeFile(true);
 
-    if (OutputFilename != "")
-    {
-       if (Poco::File(OutputFilename).exists()) Poco::File(OutputFilename).remove();
-    }
+ 
 
   }