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Thursday 19 Mar 2026

Changes to Chiltern journeys this Easter while vital HS2 work continues in Buckinghamshire

Region & Route:

North West & Central

| North West & Central: Central

Passengers travelling between Aylesbury and London via Great Missenden are being advised to plan ahead as HS2 work means changes to train services during the Easter bank holiday weekend.

Following work by HS2 to build the new 345-metre Small Dean Viaduct at Wendover last year, engineers will be installing 4,000 tonnes of stone where future high-speed services will cross the existing railway.

The major work will reinstate the boundary of the railway and help to keep trains running safely and reliably while work continues in the area to construct Britain’s new high-speed railway.

During a four-day closure of the railway, buses will replace trains between Aylesbury and Great Missenden from Friday 3 to Monday 6 April, with passengers urged to plan their journeys in advance.

Patrick Cawley, Director of On Network Works for Network Rail and HS2, said: “I’d like to thank Chiltern Railways’ customers for their patience while our work to construct HS2 - Britain’s new high-speed railway continues in Buckinghamshire.

“While engineers complete major work at Wendover over the Easter bank holiday weekend, we’re urging passengers to check before they travel with National Rail Enquiries.”

Michael Stewart, Commercial & Customer Strategy Director at Chiltern Railways, said: "I would like to thank our customers for their patience while the HS2 work is being carried out.

"I urge our customers in the area to check their journeys during this closure as they will be disrupted and may involve a rail replacement bus."

In 2025, engineers completed a 4,500‑tonne deck slide at Wendover, which was one of the heaviest and longest single‑stage slides on the HS2 project. Supported by five Y‑shaped piers, the viaduct’s innovative double‑composite steel and concrete design reduces carbon while delivering a durable, low‑impact structure built to span one of the railway’s busiest corridors.

Additionally, with major work taking place on other routes, there will no Chiltern Railways trains running between Marylebone and Amersham on Tuesday 7 or Wednesday 8 April. A limited shuttle service will operate between Amersham and stations to Aylesbury Vale Parkway, connecting with London Underground Metropolitan Line services to and from Baker Street at Amersham.

The work has been planned over Easter at the same time as a £400m investment on Network Rail’s North West & Central region which will help to make journeys more reliable for passengers and freight services.

Passengers are being urged to plan their journeys at www.nationalrail.co.uk