I've started using a Traditional Gentleman's Barbers in Addiscombe called The Valet. They do a full-on hot towel, open razor shave called the 'Signature Treatment' which lasts nearly an hour and is about a third of the price you'd pay in the west end. They also have a good range of male grooming products. For some more info on the best Traditional Male Grooming Salon and Barbers in South London.