Hi Matty,
I am Sumit here to assist you with this question.
Add take ownership to the context menu, and try taking ownership of the file by right-clicking.
Download this Registry file.
Download (tenforums.com)
https://www.tenforums.com/attachments/tutorials...
Execute it and press yes.
Restart your PC.
Right-click the file/folder and select Take ownership.
Press yes.
Try deleting the folder in Safe mode.
Good luck!