Train speed record set between London and Bristol

A new modern speed record has been set for a train running between Bristol Temple Meads and London Paddington of just 1 hour and 12 minutes. That compares to an average journey time at the moment of around 1 hour 44 minutes.
The record attempt was made last Tuesday when the service left Bristol Temple Meads at 6:49pm and arrived into London Paddington at 8:01pm to establish a post-speed restriction record between the two stations of just 72 minutes.
There have been faster trains in the past, but