Work is well underway on the project, which was originally estimated to cost £1.1billion. However, estimates have now skyrocketed to close to £7.4billion instead. The major project will be used to ...

A five-year construction project on the Chiltern tunnel, the longest tunnel on HS2, has been completed with the close of work at vent shafts at Chesham Road and Little Missenden.

The Northern Line currently holds the record at 17 miles, having opened back in 1937. But the Woodsmith Mine Tunnel is on ...

Construction has been completed on HS2’s longest tunnel, marking a significant milestone for one of the UK’s most complex ...

The Chiltern tunnel is the second of HS2’s five twin-bore tunnels to reach structural completion, following the one-mile Long ...

The massive project started in 2021 and has now been called to an end.