Yep - halfords tomorrow. Ive got a discount card - its on the way from home from work so ill go with an empty bag... 11.90 volts just now....I think im right in saying that its gotta be above 13v for it to be effective...
Got a battery earlier at halfords 112 quid for a 5year warrantied yuasa. 92 quid with the card. Bit of a cunt to fit but otherwise all OK....thanks for all the help and advice all.