16:30 Bristol Temple Meads - London Paddington
This train has been cancelled because of a broken down train earlier today
[Thought I'd start a topic similar to the one in TransWilts for this sort of thing; is that ok? Did look for an existing one but couldn't spot it.]
Thanks for your suggestion, matth1j.

I'm sure I can find some related posts to merge here, which will then offer our readers a more definitive source of such information, all in one specific topic.
CfN.

I am noting this thread as a "service update and amendment log". Yes, it makes total sense to keep the disruption reports that we post in one place, but yet at the same time I am concerned that on a line with so many services that it's going to be impractical for us / members to maintain as a complete log.
10:30 Bristol Temple Meads to London Paddington due 12:09
Facilities on the 10:30 Bristol Temple Meads to London Paddington due 12:09.
Will be formed of 5 coaches instead of 9. There are no reservations on this service.
Additional Facilities Information
Please use any available seat according to the class of travel on your ticket. If no seats are available, we would be grateful if you could make sure that those who need them most are able to use them.
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Alternatively, you can travel on either of the two GWR▸ services that are immediately before or after this one. Your ticket will be valid for travel on these GWR services at no additional cost. You can see how many coaches our services have with the 'Live Times' feature on the GWR app, or speak to staff for further information.
Would it be more practical for this thread to be "Service updates and amendments" without the term "log" which suggests that every change might be noted?
I am - severely indebted - to members and friends here for all the help given on the Swindon to Westbury
log - THANK YOU, and long may that continue. I am impressed by the work done on the North Cotswold board and that is a really useful log too - I am amazed how much / well that is updated; perhaps I shouldn't be, bearing in mind just how many people use that service. And perhaps my fears of the Paddington to Bristol (where there are 50 services a day to monitor rather than 9 or 29) being a bit less than a log are needlessly worrying? Thought / comments / inputs sought, please?