In 1829 George Shillibeer started the first omnibus service in London. Over the next few decades, horse bus services developed in London, Manchester, and other cities. They became bigger, and double-deck buses were introduced in the 1850s.
London Buses is the subsidiary of Transport for London (TfL) that manages most bus services in London, England. It was formed following the Greater London Authority Act 1999 that transferred control of London Regional Transport (LRT) bus services to TfL, controlled by the Mayor of London.
Source: Wikipedia
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