Cheers Phil. Though the discussion in that thread seems to be more about the extra platform being used as a terminating platform for the Trans Wilst services, rather than about the possibility of fast express London-Bristol(or beyond) services running non-stop through Chippenham. How long will this re-instated line be? If it's just a very short line basically not that much longer than the platform length, a "normal" London-Bristol service would have to wait around 5 minutes for a scheduled express service to Bristol to pass. This would then make the normal service 5 or so minutes slower, to accommodate an express service.
I notice in the document though posted in that thread, it mentions the possibility of extending the four track section between Didcot and Swindon. I didn't realise there was much of a 4-track section between Didcot and Swindon. But if indeed there is going to be 4 tracks all the way from Didcot to Swindon, this really does open up the possibility of true express services running once again between London and Bristol. Either via Chippenham and Bath, or via Bristol Parkway. Giving some very impressive high-speed journey times. The Bath to Bristol bottleneck may be a bit of a problem/challenge though. But interestingly there is also talk of re-instating the 4 track section between Filton Abbey Wood and Dr Days Junction. This too would be very useful in scheduling fast express services once again. However, it appears these improvments to these lines won't be happening till at least 2016 according to the document. So bit of a long wait yet! But I personally will be a littlle dissapointed if after these mentioned track improvements, and we then don't get any express services running from London-Bristol. Not saying all services should be limited/non-stoppers, but at least some i.e. a "true" express service every two hours or just some in the morning and evening peak times.
Some people may say that the current London-Bristol services are express services. I don't!
But I do understand however, the need for them to stop at Reading, Swindon,Chippenham, and Bath Spa enroute. But for people travelling between Swindon or Reading and London Paddington, there are between four to six "fast" services per hour for them to travel on. Unlike Chippenham and Bath who get just two trains per hour to/from London. So there could be argument for at least just some selected services for example to run London Paddington>Chippenham>Bath Spa>Bristol Temple Meads.
Just a few years ago(2006) there was an 1815 London-Swansea service, which ran non-stop to Swindon in 50 minutes. But now Reading is a station stop on that service. I know though that currently there is an 0640 Bristol
TM‡-London which runs non-stop from Swindon.
In the meantime for us wanting those fast Bristol-London services, I think the best we can hope for is some engineering works on the Berks and Hants line again, causing the London Paddington-Devon/Cornwall services to be diverted via Bristol Temple Meads. Some of which will actually stop at Bristol TM and running limited stop/non-stop from London. I for one am keeping a close eye on the engineering work summaries and the weekend timetables. As soon as I spot any of these limited/non-stoppers I'll be booking my tickets like a shot! Does anyone in the know here know of any upcoming engineering works on the Berks and Hants line?