300 tdi expansion tank

Anyone know where I can get an expansion tank in Manchester area ? Was supposed to be going away in the caravan but found split in tank on Thursday after I overheated .Gauge didn,t go into the red so Im hoping no serious damage.It will be Tuesday now before I can sort it.Why does it always happen to me?P.s What sort of money am I looking at?

'ere we go....LAND ROVER DISCOVERY TDI EXPANSION BOTTLE HEADER TANK on eBay, also, Land Rover, Car Parts, Cars, Parts Vehicles (end time 06-May-09 20:27:02 BST) ... plenty more on there.