Threads / HS2 Phase 2a Development / HS2 Phase One register of undertakings and assurances
Policy Paper Published 19 Dec 2025 High Speed Two (HS2) Limited ↗ View on GOV.UK

HS2 Phase One register of undertakings and assurances

This register provides information on the commitments made in relation to the High Speed Rail (London to West Midlands) Act 2017.

▤ Verbatim text from source document

HS2 Ltd updated the register on a regular basis until Royal Assent of the High Speed Rail (London to West Midlands) Bill, when the final version of the register was published.

The purpose of the register is to record all the individual undertakings and assurances given to petitioners and to Parliament in a single document. This is to help ensure that the ‘nominated undertaker’ (any person appointed to construct HS2), the Secretary of State for Transport, or any other organisation exercising the powers provided by the Act complies with them throughout the project’s lifecycle.

The register includes:

  • all undertakings between petitioners and the Secretary of State for Transport
  • undertakings given in the High Speed Rail (London to West Midlands) Bill Parliamentary process
  • assurances given to petitioners in letters from HS2 Ltd, the Department for Transport or HS2 Parliamentary Agents (Winckworth Sherwood and Eversheds) on behalf of the Secretary of State for Transport; and
  • assurances given in the HS2 information papers.

You can view additional relevant information on the HS2 information papers page.

The register also forms part of the HS2 Phase One environmental minimum requirements and should be read in conjunction with them.

Enquiries regarding the content of the register should be sent to the HS2 undertakings and assurances team at:

hybridbilllegal@hs2.org.uk

High Speed Two (HS2) Limited 5th floor, Sanctuary Buildings 20 Great Smith Street London SW1P 3BT

General enquiries regarding HS2 should be directed to the HS2 helpdesk:

HS2 helpdesk

High Speed Two (HS2) Ltd
Two Snowhill
Snow Hill Queensway
Birmingham
B4 6GA

Email HS2enquiries@hs2.org.uk

Freephone 08081 434 434

Minicom 08081 456 472

The helpdesk team are unable to transfer calls internally to HS2 Ltd members of staff.