Final breakthrough for HS2’s longest tunnel

The second tunnel boring machine (TBM) digging the future HS2 railway tunnels under the Chilterns has finished its job - meaning the two 10-mile tunnels have been completed and are now ready for fitting out.

HS2 — UK’s largest railway tunnel boring machine completes 10-mile dig under the Chilterns

HS2's longest tunnel, running for 10 miles under the Chilterns, has been completed as the tunnel boring machine broke out of the ground to complete its long task.

HS2 begins year-long, half-kilometre viaduct deck slide

HS2's engineers have started sliding nearly half a kilometre of bridge deck over a series of pylons to span a valley just to the south of Wendover.

HS2 reaches halfway mark in tunnelling crucial side passages under the Chilterns

Deep under the Chilterns, HS2 has reached the half way mark in tunneling the nearly 40 side passage tunnels that will link northbound and southbound tunnels.

A Duo of Deans: Building HS2’s two Wendover railway viaducts

Just outside Wendover, two railway viaducts are being built for the HS2 railway, and they're the first of their kind in the UK.

HS2’s Transformation: Building more than just a High-Speed railway near Aylesbury

Just outside Aylesbury in Buckinghamshire, one of HS2's large construction sites is almost as busy building roads as it is building a railway.

HS2’s two TBMs now three-quarters of the way under the Chilterns

The two tunnel boring machines that set off from just inside the M25 motorway are now three-quarters of their way under the Chilterns as they head north out of London.

HS2’s London tunnel boring machines reach Amersham

HS2's two tunnel boring machines heading northwards out of London have now reached Amersham, passing 5 and a half miles of their 10 mile drive under the Chilterns.

HS2’s longest railway tunnels reach halfway point under the Chilterns

The two tunnel boring machines that set off from just inside the M25 to dig two HS2 railway tunnels have reached the halfway mark in their progress northwards.

West London’s HS2 construction site reaches landscape restoration milestone

Work to turn a large HS2 railway construction site next to the M25 motorway into a large chalk stream wildlife haven has reached a milestone, with the millionth cubic metre of chalk laid out around the south portal of the Chiltern tunnel.

HS2 starts tunnelling in northwest London

Just inside the M25 in northwest London, HS2 has powered up its first tunnel boring machine, which will head northwards under the Chilterns.

HS2 planning large nature reserve next to the M25 motorway

The building site where the HS2 railway dips into a tunnel under the Chilterns is to be turned into a large nature reserve once the construction works have finished.

HS2’s tunnel boring machines arrive in London

HS2’s first two Tunnel Boring Machines (TBMs) have arrived in the UK ahead of starting tunneling work next to the M25 early next year.

New photos show HS2’s southern tunnel portal

Initial photos have been released of the building site where HS2 tunnels will dive under the M25 and tunnel their way beneath the Chilterns towards Birmingham.

Day trips from London – West Wycombe & the Hellfire caves

A small picturesque village in the Chilterns famous for the deeds of its long time owner, and the notorious hellfire caves.

Day trips from London – The Bridgewater Monument

In the middle of woods can be found a tall stone column, built to honour the man who built the UK's first industrial canals -- Francis Egerton, 3rd Duke of Bridgewater.