[TEW]

Originally Posted by transportphoto

Thanks, can you confirm its booked HST?

Is there any other HST services up til about 1300 arrival at Paddington?

The 1139 is the only HST around that time. It arrives at 1159. Otherwise the 1209 is a 6 carriage 166, so you won't have a problem getting a seat. That arrives at 1229. There is a 1239, arriving 1300. That is a 3 carriage 165/166 though.

[dzug2]

Originally Posted by RJ

Could "counted seat" actually mean quota-controlled Advance reservations which don't actually include a seat reservation?

Not from Slough. However some of the turbos from Oxford do have quota controlled advance fares from Oxford - but no reservations.

http://www.firstgreatwestern.co.uk/D...EB_%281%29.pdf

shows which trains are booked as HST and should have actual reservations - the 1139/1140 is the only one anywhere near OPs times