HS2 said final plans for the terminus station at Euston “are still under review” and it is working with government and other stakeholders “to design an affordable station design that can run HS2 services from London to the Midlands”.
The completion of the Birmingham to London project was put in doubt in October 2023 when the then-prime minister, Rishi Sunak, said extending the high-speed rail project from Old Oak Common to Euston would be reliant on private investment.
However, in her Budget in October the chancellor Rachel Reeves committed to the funding required to begin tunnelling work to Euston.
When the government announced the new high-speed line to link the capital with regional cities in 2009, it was predicted the London to Birmingham section would be completed by 2020 and cost £7bn.
That phase of HS2 is now expected to open between 2029 and 2033.
The Department for Transport said the remaining project cost is estimated at £45bn to £54bn in 2019 prices, however, HS2 management estimated £49bn to £57bn.