http://www.visitlondon.com/traveller-information/getting-around-london/taxis http://www.visitlondon.com/traveller-information/getting-aro... "You can tip taxi

http://www.visitlondon.com/traveller-information/getting-around-london/taxis http://www.visitlondon.com/traveller-information/getting-aro... "You can tip taxi drivers as much as you like, but most people round up to the nearest pound."