By Jack Mendel Hospitality leaders in the capital have warmly welcomed the mayor’s decision to implement off-peak rail fares on Friday, with one bar chain considering naming a drink after him. Pubs, bars, restaurants and entertainment venues were breathing a sigh of relief this morning after the Mayor of London announced a three-month trial for off-peak tube and rail tickets on Fridays. The announcement was welcomed after a post-pandemic lull in workers going into the office meant historically low usage of the London Underground on Friday. This led to a sharp decline in people going out after …