Disclaimer/retraction/whatever
There is now reason to believe that the information on that site is not at all reliable.
See: http://www.urban75.net/vbulletin/showpost.php?p=4638041&postcount=160
Never-the-less it seems very likely that this website was the source of the claim that the 7:40 had been cancelled.
TAE said:Primary Source Found!
Ok, this information is from an email which appears to have originated from a thames link employee:
http://www.financialoutrage.org.uk/thameslink_database1.htm
BookedDepartureTime ActualDepartureTime ArrivalTimeAtKingsCross
07.16 ..................... 07.21 ................... 08.19
07.20 ..................... On time ................ 08.15
07.24 ..................... 07.25 ................... 08.23
07.30 ..................... 07.42 ................... 08.39
07.40 ..................... Cancelled ...............n/a
07.48 ..................... 07.56 ................... 08.42
As has been stated repeatedly, it is utterly possible that the bombers took the train at 07.25 and arrived at 08.23.
However, this does show that the narrative is rather lacking in factual accuracy.
There is now reason to believe that the information on that site is not at all reliable.
See: http://www.urban75.net/vbulletin/showpost.php?p=4638041&postcount=160
Never-the-less it seems very likely that this website was the source of the claim that the 7:40 had been cancelled.