Many Thanks for all of your help on this one!

In the end there were to many problems using the SETUID for this project and I didn't have enough time to investigate it more.

Instead I am now creating a list of the files that need to be deleted, and then connect to the server with Net::FTP using the required user name.

I am then able to CHMOD and Delete the files and Directories. I know its a long way around, but it seems to do the job!

Many Thanks again!

Alistair