How many tube carriages are there in London?

I had a look on the WIkipedia page on rolling stock for the underground. London Underground rolling stock If my mathematics are correct there are 81 units which will consist of a number of carriages. However 81 units sounds rather low. read more

However there are also two of the original steam locomotives as well. There are also some battery locomotives which can be used when the power is switched off. London Underground battery-electric locomotives The London underground is so old that you could take the tube to a public hanging. read more

128. There is a mosquito named after the Tube – the London Underground mosquito, which was found in the London Underground. It was notable for its assault of Londoners sleeping in the Underground during the Blitz. 129. read more

The first tube railway, the City & South London opened in 1890 with electric locomotives hauling carriages. In 1898 the Waterloo & City Railway opened to the public using electric multiple units. Each four-car train had two trailers and two motor-cars with two 60 hp (45 kW) motors that could be directly controlled from either car. read more