I have always used Penfolds in Cuckfield but their saddler has broken his leg so this time I managed to get an appt with Karen from Chaskit (near Tunbridge Wells) and I was very impressed by her and will use her again. I bought a saddle so no charge for call out. I've also used Andrew Reilly before, though he does (mainly) synthetic saddles. He's based in Hadlow Down I think. There is also Jules at Windmill Feeds Saddlery in Cross in Hand, although I have no personal experience of her work.