Network Rail is carrying out infrastructure improvements as well as essential maintenance of the region's railway to help provide better and faster journeys.

Wessex and South Cost GWR route map

Rail improvement work is planned during the autumn on the Heart of Wessex route serving Weymouth, as well as work in the Castle Cary area.

This is for track renewal and essential maintenance to be carried out by Network Rail to help maintain rail connections between Somerset and Dorset.

Track renewal work is also taking place that will affect trains between Salisbury and Southampton in September, or via Westbury in November.

Impact on train services

The impact on Great Western Railway services will be as follows:

  • Portsmouth area – Sunday 4 December
  • Southampton area – Sunday 11 and weekend of 17/18 December
  • Portsmouth area – Tuesday 27 December
  • Portsmouth area – Sunday 5 February
  • Salisbury area – Weekend of 11/12 February
  • Reading to Westbury – Saturday 18 February to Thursday 2 March
  • Southampton area – Weekend of 18/19 February
  • Dorchester area – Monday 27 February to Friday 3 March, plus Monday 6 to Friday 10 March

Looking ahead

Trains will also be affected by rail improvement work between Castle Cary and Taunton from Monday 20 to Thursday 23 March.

Rail improvement work will also affect train services between Romsey and Southampton Central from Sunday 26 March to Thursday 6 April.

Check before you travel

Online timetables may not be amended until a few weeks before planned disruption, so please check your journey details as close to your date of travel as possible.

Check your journey

Using one of our rail replacement services?

Don’t forget, space is limited on buses/coaches compared to trains, so please don’t bring:
  • large items of luggage
  • bikes (excluding folding bikes)
  • dogs (excluding assistance dogs)
Pushchairs must be folded up and stored as luggage.

Help with your journey

It’s best to let us know in advance if you need help. To find out more, visit

Please note there are no lifts available at Castle Cary station for any customers requiring step-free access for platforms 2 or 3.