Hello,
Just a quick update.
I tried Malware Bytes to great effect.
It found 10 items hidden away plus it highlighted some registry entries.
I got back to the folders one by one and deleted them, then ran another scan.
Second time around it found 5 entries and again I went to each folder and deleted it.
I ran out of time on Sunday but I'll fire up the PC this evening and check it again.
Fingers crossed it'll be okay.
Regards Martin