In reply to gethin_allen:
Jaguar style 2.2 diesel. It's just halfords being overpriced. I can get the exact same battery for £73 from eurocarparts... I just needed it running today so bought it with intention of not using and returning it once I've got one for a decent price.
It's an hb110 85ah 800a standard battery halfords only had the Bosch 5 yr jobs rather than their own brand in that size (which is still £117)