And as I was typing out more of this message, I got a SMS from the mechanic saying the car was ready for collecting. This is what was left of the caliper:

The other one came off OK with heat I believe. He said he spent most of the day on it, and asked if 1500SEK (~£112) was too much, I said no considering the indy near the flat we lived wanted to charge 1800SEK (~£133) for just 2 hrs work (possibly would have been more considering the state this one was in).
I forgot to ask what he did about the pipe though, but all in all very happy with the result.
Now I'll need to get it back up to the city for a re-test at some point.
