Had to call out the AA today as the cage wouldn't start , took them about an hour to get it going , he reckoned the plugs were the original ones ( so much for stamps in the service book) the gaps seemed rather large to me but i'm no expert . Drove it down to Vauxhall Avon street , as its booked in for a diagnostic and 40k service tomorrow morning , its gonna be expensive , new plugs , filters , oil change , coolant change , fuel flush and temperature sensor .