 Trains, once again, were regularly derailing on the line.Frank Pick, managing director of the Underground Group from 1928 and the Chief Executive of the LPTB, aimed to move the network away from freight services, and to concentrate on the electrification and improvement of the core routes in London.He saw the lines beyond Aylesbury via Quainton Road to Brill and Verney Junction as having little future as financially viable passenger routes, concluding that at least £2,000 (about £ in 2020) per year would be saved by closing the Brill branch.