Taxi drivers drive either traditional black cabs, known as "hackney carriages", or minicabs, known as "private hire vehicles". They pick up passengers and drive them to their destination, charging a fare and taking payment. They work out the fastest and most efficient route, and drive to the destination. Drivers may help load and unload passengers'' luggage.
Minicab drivers are linked by radio to an operating centre, which relays details of where to pick up the next customer.
Hackney carriage drivers may also be linked by radio to an operating centre. In addition, they are allowed to either wait at a taxi rank or drive around near railway stations, airports, shopping centres, hotels, pubs and clubs, or any areas where pedestrians may want to hire a taxi.
They must ensure their vehicle is in a clean and roadworthy condition. Those who are self-employed have to keep accounts and deal with tax returns.
http://www.taxi-licence.co.uk