There are two kinds of taxis in the U.K. - taxis that you flag down (Hackney carriages), and taxis that you book in advance (private hire) - and that includes Uber. You are not allowed to flag down a private hire vehicle.
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Look for the light – if the roof light on top of the cab is lit, the taxi is available for service. Raise your arm to “flag” the cab, and do your best to make eye contact with the driver. Be prepared to let the driver know where you're headed.
London's official taxis, black cabs can be hailed in the street or at designated ranks located in prominent places, including many train, Tube and bus stations. They can also be booked through the Gett app and by phone. If the yellow taxi sign on the front is illuminated, the cab is available for hire.
There are two kinds of taxis in the U.K. - taxis that you flag down (Hackney carriages), and taxis that you book in advance (private hire) - and that includes Uber. You are not allowed to flag down a private hire vehicle.
Tipping taxi driversIt is polite to tip 10 to 15% of the taxi fare for black cabs and licensed minicabs in London. However, most people simply round up the fare to the nearest £1 and tell the driver to keep the change.
The rule derives its name from the tradition by which a hackney carriage driver at the head of a queue of taxicabs is obliged to take the first passenger requesting a ride.
You can simply hail one in the street, walk to one of the many taxi ranks dotted around the city or call one of the different taxi companies. If you choose to flag down a Paris taxi in the street, all you have to do is make sure it's empty by looking for the green 'TAXI' light on top and sticking out your hand.
How to get a taxi in London. Getting a London black cab is extremely easy as there are thousands of them bustling around the city centre. You can choose to take one from the street as it passes by, walk to a designated taxi rank or call a local London taxi company.
All black cabs accept payment by credit or debit card without a surcharge. For a full list of fares, check out Transport for London's taxi fares information. You can tip taxi drivers as much as you like, but most people round up to the nearest pound.
Unlike some countries you do not have to tip in the UK. However, there are some unsaid social rules about leaving a tip. For example, if you take a taxi it is normal practice to round up the fare to the nearest pound.
A hackney or hackney carriage (also called a cab, black cab, hack or London taxi) is a carriage or car for hire. A hackney of a more expensive or high class was called a remise.
If you see that the light is on (you'll know if it is, it's a bright yellow light), then to hail the cab simply stand on the side of the pavement and extend your arm outward. There's no need to shout “taxi” and indeed, it's actually illegal to shout “taxi” whilst trying to hail a cab.
From Driver Rule 54-20 (in PDF): It is against the law to refuse a person based on race, disability, or a destination in New York City. A taxicab driver is required to drive a passenger to any destination in the five boroughs. You can make a refusal complaint by calling 3-1-1.
Report the incident. Even if it's been a bad day for the cabbie driver, or he was just reacting to circumstances, rudeness should never be tolerated (credit miller). Contact the cab company right away and let them know what happened.