£99 per hour dual from a small grass strip in Hertfordshire (High Cross, just north of Ware on the A10, school is PSF), an hour's drive from central London. As High Cross is unlicensed you have to do a touch & go at Stapleford, 10 mins to the southeast, but the flight down there is actually quite a pleasant way to start each lesson, and means you're doing a navex/join pretty much every flight.
Cups of tea and dodgy shaggy dog stories from Alan Adams completely free