- 15 December
- 1906 – Great Northern, Piccadilly and Brompton Railway opens between Finsbury Park and Hammersmith.
- 1913 – Thomas Sopwith establishes the Sopwith Aviation Company's factory at Canbury Park Road, Kingston to manufacture aircraft.
- 2017 – All-night London Overground services begin.
- 2019 – TfL Rail begins services between Paddington and Reading as the third stage of the Crossrail service implementation.