Just bought some stuff (Hotronic boot heater) from
RockWaterAir.co.uk - Adventure Equipment - Superfeet, Aquapac, Petzl, Silva, SOLE which was a very good experience. Reason for posting here is that I also found an offer code "OFFER" that gives 10% on everything. May be useful to others as I couldn't find the Hotronic lower. (actually I could but it was only 50p cheaper and that company only had an 0844 contact number).