On holiday in Devon, about 5 minutes from the accomodation and i the EML comes on, and i lose power, no odd noises just low power, i.e floor it at 40 and not a lot happens, just slowly speed up. Think to myself i'll pull over in the next layby and then the engine cuts. no bang or anything just cuts out. coast onto a grass verge and turn the key, grating noise.

RAC come out and diagnose a top end problem, with the cams most likely, tow me to a garage who estimate £2k without even looking at the engine for new belt and gubbins, new gaskets, skimmed heads and new cams all round, i tell them dont bother i'll have the RAC flatbed it home next week at the end of my holiday, in the meantime i've bought a cheap as chips '96 1.2 corsa that's as slow as a one legged dog on tranquilizers. but anyway, when i get home i'm gonna investigate properly and fix it myself if possible.
So any ideas what it could be?
Timing belt was tight and only 17k old btw.