Wikipedia explains what is "London taxi"
The Beardmore was an alternative taxi design used in London during the 1960s and 1970s
Until the late 1950s, vehicles licensed as London taxis were required to be provided with an open-access luggage platform in place of the front passenger seat found on other passenger cars (including taxis licensed for use in other British cities).
A hackney or hackney carriage (also called a cab, black cab, hack or London taxi) is a carriage or automobile for hire. A hackney of a more expensive or high class was called a remise.
Services of taxi
Taxis are very useful if you live in the city. How many times a month you happen to use the services of taxi transport? I suspect that at least several times a month, and many people use these services couple times a week.
It is worth considering why choose a Taxi- yet we have buses and metro. What makes the taxi is more convenient and better in some situations? I think it is a matter of getting on to it when and where you want and that you get exactly to the indicated address. This is luxury that you won't get in public transport.
Methods of transport
Personal transportation comes in many forms, from the trains, the buses, on taxis and cars ending. Private transport companies grow more and more because of the increasing demand for transport services relating to the carriage of passengers.
More and more customers want to get to the specified place, so no longer use public transport (trains and buses) because most of them choose the taxi and transportation such as Uber. But taxi companies have quite competition in market, so they must develop a way to keep their customers beside them.