Old Oak Common: inside HS2’s planned west London interchange

Old Oak Common in west London is designed to be a major interchange between HS2 and the existing railway. Its importance is not just the size of the construction site. It is the prospect of passengers moving between high-speed services, the Elizabeth line and Great Western routes without treating central London as the only place where long-distance journeys can connect.

Two railways in one station

HS2’s official station description sets out 14 platforms: six for high-speed services and eight for conventional services. The high-speed station is being developed below ground, while conventional platforms form the other part of the interchange. The design therefore has to bring different railway systems together into one understandable passenger experience.

The high-speed station box is described in HS2 construction material as 850 metres long. That is a significant engineering structure, but a dimension alone does not explain how passengers will use it. Connections between concourses, platforms and entrances will determine whether transfers feel direct and manageable.

The connections that matter

The planned conventional connections include the Elizabeth line, Great Western Railway and Heathrow Express. These create potential links with Heathrow, central London, the West Country and South Wales. For many travellers, the benefit is the interchange itself rather than travelling on every part of HS2.

Future advertised journey times need context. A promotional estimate for one train leg is not a complete door-to-door journey. Time for transferring between platforms, accessibility requirements and the frequency of the connecting service all need to be considered before drawing conclusions about a whole trip.

Design beyond platform numbers

HS2 describes curved, interlocking roof sections intended to create an open station environment with clear sight lines. The plan also includes pedestrian and cycle connections, bus and taxi facilities, and public space outside. These features are relevant because an interchange must work for people arriving by several modes, not only those already on a train.

Step-free movement, understandable signs and sufficient room for passengers with luggage are especially important at a station serving airport connections. The eventual operation needs to support the design: lifts, information systems and staff assistance all require reliable maintenance.

Old Oak Common and Euston

Discussion of HS2’s London end often combines Old Oak Common with Euston. They are different stations with different delivery questions. An update about work at one should not automatically be treated as confirmation of the other’s opening date or service arrangements.

Until passenger service details are confirmed, treat proposed operating patterns as plans. High-speed infrastructure creates options, but timetables depend on the wider network and decisions about the programme. Avoid booking travel on the basis of a historic target date quoted without its source or publication date.

The neighbourhood question

A large railway project also affects residents and businesses nearby. Construction traffic, noise, walking diversions and the eventual shape of public space are legitimate civic questions. Regeneration plans should be distinguished from completed homes or jobs: forecasts describe expectations rather than measured outcomes.

Our projects directory provides a place to follow the scheme in the context of other UK rail investment. The rail map helps explain how proposed connections relate to existing stations. For current journeys, consult operational departures and disruption information instead of assuming a construction site is already a passenger destination. Old Oak Common is significant because of the connections it is intended to make; careful reporting should explain that ambition while keeping plans, construction progress and actual services separate.