Thank you for your quick response. I was just a little confused by the message left on the product page. Apart from the limitations as detailed, will it completely erase the files during the drive wipe? The message is as follows:
Wipe Free Disk Space limitations
CCleaner can't wipe every deleted file from your free disk space. There are some limitations, because of the way Windows stores some files. Here are some examples:
The file has been overwritten by another file (so no need to overwrite this again)
The file had been overwritten by another file before you ran CCleaner, but the second file has now been deleted as well.
The file was created almost exactly when you ran CCleaner.