Following my earlier post concerning the intermittent non-start problem on my Omega, it's failed again on three more occasions in as many months (which is actually more frequent than before the work was done on it). I was hoping that my local Main Dealer would have an "engine systems expert" who would know that on that engine, it's likely to be <x> and we can be more certain if we check <y> ... but of course life ain't like that. So if anyone can recommend somebody with specialist knowledge and expertise in this area and who operates in south Hertfordshire, I would be eternally grateful ... Condiments of the season ...