Well...
XTC hail from Swindon, and I went to art college there. The band I was in around 1979/82 rehearsed and recorded in Tudor Studios (long gone). XTC used the same place to rehearse for their 'English Settlement' tour. We found their gear all set up one Sunday afternoon and just thought 'why not?'...they weren't at all happy when they found out
We were on quite good terms with Partridge though and he borrowed my Marshall amp & cab for a Swindon gig when his developed a fault. You can also see it in the 'XTC at The Manor' documentary at one point.
We borrowed his DX7 for a session one time, although he charged us £10 for that as I recall...
There's still a connection, as the singer in our band was Tim Wilkinson, my life-long friend, who designed both album covers for Tin Spirits, one of Dave Gregory's current bands.