Got the brakes done at the weekend. Drivers side was pretty straight forward. Had to move the wheel arch trim to get enough leverage on the carrier bolts. The Pagid pads had a lot of life (at least 50%) in them but the discs were shot. Decided to replace the pads anyway but have kept them for future use.
The passenger side took a lot longer though as the disc retaining bolt had been over-tightened and it rounded. So I had to spend some time drilling it out and then using a cold chisel and hammer to turn it.
Cleaned up the reluctor rings and removed all the crud around the sensors. Put the brakes through several heat cycles and impressions were good. Certainly the squealing had gone. Not as much bite as the Pagid pads but they probably need some more abuse to bed them in. Best of all, the ABS/TC lights stayed off for the 90 odd mile journey home.
Started the car first thing on Sunday and the ABS/TC lights came back on almost straight away
Didn't get round to checking the rears so that'll be the next point of call. I guess if after I clean them and I'm still having issues then it's time for new sensors. Any idea how much they cost?
Oh and my suspected blown exhaust manifold gasket would appear to be more likely a blown down-pipe, as I now have an almost V8 soundtrack....my neighbours are loving me!