Wasn't that impressed with the bottle of Gliptone that I had, I much prefer this stuff (or similar) recommended to me by a Rolls Royce owner too
http://www.saddler.co.uk/acatalog/Co...r_Leather.html
Used to be able to get similar stuff from Pet City/Smart for about the £5 mark, but I think they've stopped doing it, as last time I asked in local Pet City I just got a blank look, thankfully there's plenty of equestrian places round here, so wasn't hard to get some
EDIT
Quick hunt, this is saddle soap I use, damp sponge, quick wipe over soap, and gentle rubbing over leather, lifts the dirt out with no real effort
http://www.saddlery.biz/pp/Tack_Care...ddle_Soap.html