If you’ve travelled on Britain’s only true high speed railway, HS1, then you’ve travelled on tracks operated, maintained and renewed by Network Rail High Speed (NRHS).  

NRHS is a wholly owned subsidiary of Network Rail Infrastructure Ltd who manage the UK's only high speed line. That means it constantly has to prove itself as a quality provider, from reliability to value for money.

As the only 300kmph railway in the country, HS1 operates to different standards to the rest of Network Rail. It has its own safety management system and even its own track safety qualification. For instance, there is no red zone working on HS1, as the speed of the trains means it is unsafe to work on an open line, it is therefore classed as a people-less railway.

NRHS has an agreement with its client HS1 Ltd to operate, maintain and renew the HS1 route infrastructure and its three stations: St Pancras International, Stratford International and Ebbsfleet International.

NRHS is responsible for the safety and security of the entire railway and work closely with the British Transport Police (BTP) and security teams to maintain this and make sure trains run on time for our passengers.

Our train operators are Eurostar and Southeastern which run on HS1 tracks. NRHS also have relationships with East Midlands Railway and Govia Thameslink Railway Ltd. (GTR) who access St Pancras station, as well as freight companies GBRF and DB Cargo, which make up the 1% of freight traffic.

Anthony Barnes
Route director, Network Rail High Speed

Main railway lines

  • High Speed 1 is the rail line between St Pancras International in London and the Channel Tunnel and connects with the international high-speed routes between London and Paris, and London and Brussels.


We work closely with local communities to promote safety by the railway.


The HS1 infrastructure is still relatively new with our oldest assets now approaching 17 years. In the last few years we have started to see the need for renewal interventions as the asset ages. We are working closely with our train operating companies and stakeholders to ensure that renewals on the high speed line minimise disruption for our passengers and keep trains running on time.