Ford recommend the cam belt be changed at 100,000 miles. As this seemed alot, I had it done today at 81,109 miles. I asked for the cambelt, tensioners, auxiliary belt and water pump to be changed as it is apparently best practice to do so.

I picked up my car just as the garage was closing. I parked at home (not even 1/4 mile away)When I next drove it I noticed the car felt tight and slightly underpowered, so made the decision to play it safe and turn back. About 1 mile from home - bang - no power, engine gone. The mileage at this point was 81,125.

The recovery driver came out and advised me that the cam belt was extremely loose (presumed snapped) and that the pulley felt loose too. It was dark and freezing so he couldn't get a better look.

I have to go to the garage tomorrow to confront them about this, but where do I stand?