Celebrations have been held to mark the 40th anniversary of the High Speed Train. The trains were first introduced on the lines between Paddington, Reading, Newbury and Bristol.
When they were introduced they brought a new generation of faster travel all over the country.
The event was organised by Great Western Railway and attended by locomotives from all over the country.
And enthusiasts certainly didn't want to miss the event with 5,000 attending. Our Transport Correspondent Mike Pearse joined them.
He spoke to Great Western Railway spokesman Dan Panes, Sir Kenneth Grange who designed the train and Andy Mellors, Great Western Railway Engineering Director.