Not run in safemode but have run without AV running.
Most modern AVs from my experience can't be fully disabled while in the normal mode of Windows. The reason being they'll still have drivers running in the background that have nothing to do with stopping real-time protection or services associated with them.
I've run it a few times now using normal and not secure delete.
Now when I run it with secure delete turned back on it gets to completion. Very bizzare; I even left it over night once and it remained stuck on the file.
If it happens again I will run it with the debug switch and start a new topic.
Thanks for you're help, sorry to have wasted your time.