High-speed rail in the United Kingdom

High-speed rail in the United Kingdom is under development. There are both existing and proposed high-speed lines.

List of lines

High Speed 1 (HS1), also called the Channel Tunnel Rail Link (CTRL), is a 108-kilometre (67 mile) high-speed railway between London and the United Kingdom end of the Channel Tunnel.^[1]
High Speed 2 (HS2) is a planned high-speed railway. It will directly link London, Birmingham, the East Midlands, Leeds and Manchester. It is due to open in stages from 2026.^[2]
High Speed 3 (HS3) is a proposed high-speed railway from Liverpool to Hull.^[3] Its current status is uncertain.
HS4Air was a proposed high-speed railway line to link Heathrow Airport and Gatwick Airport. It would also connect to HS1 and HS2. It was proposed in 2018 by British engineering consultancy, Expedition Engineering.^[4]

Mallard, the record-holding steam locomotive, with a recorded top speed of 126 mph (203 km/h)
The British Rail APT-E in the RTC sidings between tests in 1972.
A production version of the APT (1980-86)
An InterCity 125 train at Hull Paragon station in 1982. The InterCity 125 is the world's fastest diesel train.
91019 heading north out of Peterborough on the East Coast mainline. Picture taken from Woodcroft Crossing Footbridge. Tracklaying in progress.
A Class 220 Voyager DEMU, built in Belgium by Bombardier Transportation, which is capable of speeds of up to 125 mph
A Class 390
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Pendolino at Manchester Piccadilly. The Class 390 was designed for 140 mph (225 km/h), but is currently limited to 125 mph (201 km/h) due to a lack of cab signalling which is required by regulations for trains to be permitted to operate at more than 125 mph.
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Southeastern High-Speed train at Ebbsfleet International. Southeastern's high-speed services are the only domestic rail services in the UK to operate at speeds of more than 200 km/h.
The rising market share of Eurostar on the London-Paris route