get him the timing tools I think I paid about £140 for the full genuine set needed for the job (renaultpartsdirect.co.uk) sell them on when done. There is a 90Mb full service pdf file with different sections for the cam belt change parts, torque settings the works if the guy is any good he should be able to sort it out if you give them both. Like most every type of work no one else likes taking on someone else's half jobs and will prob cost just as much to move the car to someone else and pay them with new parts as well. Mine was done as a home job with a long time served senior Renault dealer mechanic I bought the full timing, water pump, and aux belt genuine sets from als performance charlisle for about £290 the dealers where doing an offer and it was £350 for parts and about the same for labour. I have had 16v Williams type, 172 and 197 Clio's and if you have not learned by now that car parts places say they have the right parts and they are not, always get the genuine Renault part number and cross check sure look at eBay search for Clio 197 wheels and see how many 4 stud wheels come up. Also somewhere in the form a guy had a problem with misfires and it turned out to be air getting past the intake gasket they sprayed fluid around it to find the problem while running. Your listed as Essex what about the guys at blue water Dartford two techs or something I am in northern Ireland so maybe there is a specialist near you I don't know the lay of the land over there that well just the bits around and traveling to the main racing circuits.