List of tunnels in the United Kingdom

Download coordinates as: This is a list of road, railway, waterway, and other tunnels in the United Kingdom.

A tunnel is an underground passageway with no defined minimum length, though it may be considered to be at least twice as long as wide.

Some government bodies define a tunnel as 150 metres (0.093 mi) in length or longer.

There are even tunnels designed as wildlife crossings for European badgers and other endangered species.

The longest tunnel in the United Kingdom is the Northern line at 27,800 metres (91,200 ft).