From the
TransWilts website
Travellers using the TransWilts line are being warned that engineering work will affect services each weekend from the 9th until 31st January.
There are minor changes to Saturday times on the 9th, 16th and 30th but during the middle of the day a change of train will be required at Chippenham to reach Swindon. On the 23rd all services from Westbury will terminate at Chippenham where buses will be available to Swindon and trains will run to Bath Spa and Bristol Temple Meads.
On Sundays 10th, 17th and 31st all services will run between Swindon and Westbury but you will need to check journey planners as many times will have changed. The usual Sunday morning bus service from Warminster via Westbury and Melksham to Swindon will run as normal. On Sunday 24th all services from Westbury will again terminate and start back from Chippenham, where again connections will be available to Swindon, Bath and Bristol.
These changes are to allow the retiming of mainline services while Network Rail works on the track in the Swindon area, and it is recommended that you check journey planners in the week preceding your date of travel to ensure you pick up all the latest amendments.
Weekday services are not affected by the work.
