The 1738 from Swindon left over 2mins early tonight, leaving the 1733 to Taunton trundling behind in its wake on the approach to Chippenham. I know it's usually 1736 but its not this week and that's no excuse for Swindon station staff to despatch it early is it?
That's a very interesting one, John!
Normally it is 17:30 London to Taunton followed by 17:36 Swindon to Westbury (connecting from London - Taunton)
Today it was scheduled 17:33 London to Taunton followed by 17:38 Swindon to Westbury (connecting from London - Taunton)
According to Realtime Trains:
(Swindon - next trains)/2014/10/16/0000-2359?stp=WVS&show=all&order=wtt" target="_blank">http://www.realtimetrains.co.uk/search/advanced/SWI/2014/10/16/0000-2359?stp=WVS&show=all&order=wtt
Swindon to Westbury - due 17:38, left 17:35 3/4 (2 1/4 minutes early)
Paddington to Taunton - due 17:33, left 17:41 1/2 (8 1/2 minutes late)
That would have been a signalling decision to send out the Westury train first, but even when the signal was cleared the dispatch staff, the conductor and the driver should (I believe) have waited to 17:38 which was today's amended public time. Which would have delayed your Taunton all the more!
I regret the loss of a connection ... because the system will only sell advance seats onto the TransWilts train with that particular connection it's all the worse. However, where a train is varied for just a handful of days, it's not as serious if it leaves closer to the usual time that everyone knows provided connections aren't broken as a result. By clearing the signal, the staff on the platform and train were put ino a difficult position - go early and risk comment like this, or wait for 17:38 and risk holding up other services.