When checking over "Moneypit" ,to make sure it was all ok for the filming with Chris Barrie, I noticed that the rear brake felt "crunchy" ...and sure enough a bit more squeezing of the brake lever produced the expected snapping of the brake cable
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The cable was fitted in November 2006 so, considering the usage "Moneypit" has had, I reckon I got my money's worth
The London run has quite a big downhill stretch near the beginning, with traffic lights half way down. If you want to avoid copying Blablubablabubs Welsh experience, it might be worth giving your c5's a good check over before the meeting