If you are unable to delete a file or directory due to having too long a file path name, you can get round this by mapping a Network Drive part of the way down the path.  For example, you would like to delete all the files and folders underneath N:\Administration\Access\Educational Engagement\Education Outreach\Research Skills\EPQ\2017-18, map the letter Z: to Z:\Administration\Access\Educational Engagement\Education Outreach.  To do this:

 

• Open Windows Explorer.
• In the left pane, scroll to 'This PC' and right-click.
• Select 'Map Network Drive'.

• In the new window that opens, click the 'Browse' button.

• Browse down the directory tree to the desired stop point as referenced above ie 'Education Outreach'. Click OK.
• Click Finish.

The network drive should now be mapped.  From here you can navigate to the files and folders further down the tree and delete them as required.