Just thought I'd share this one with the group.
Today the RRIII told me the battery was going flat in the key fob (how does it know that? Clever stuff!)
Anyway Off I toddle in to my local Stradstones and ask for a replacement battery x2 as I may as well do the spare key.
RRIII part number shows 1 battery £9 odd plus tha VAT
Disco part number shows exact same battery but a pack of 2 (yep thats right two) get this.... £7 plus VAT
So well done parts chap at Stradstone for not fleecing me and heads up everyone else with a RRIII and a low battery on the fob.
Lee D