An attempt to break a 36-year-old record for the fastest train journey between London and Glasgow failed by just 21 seconds today.

Avanti West Coast’s Royal Scot train arrived at Glasgow Central three hours, 53 minutes and one second after its departure from London Euston, according to the operator.

The firm wrote on Twitter: “In the words of So Solid Crew, we missed it by 21 seconds.”

The train operator said it was embarking on the record bid to highlight "the ease of travelling between the home nations" and the train's journey today saw it speed out of the capital via Harrow & Wealdstone and all the way to Scotland.

Harrow Times: The train leaving London Euston this morning. Credit: PAThe train leaving London Euston this morning. Credit: PA

The nine-carriage Pendolino train travelled non-stop at an average speed of 103mph on the 401-mile route but rail expert Mark Smith, who was on board, said a temporary speed limit on the track at Carstairs, South Lanarkshire, "cost us 90 seconds" and the record wasn't beaten.

The failure means the record remains three hours, 52 minutes and 40 seconds.

That was set by a British Rail prototype Advanced Passenger Train in December 1984, which was allowed to travel in excess of today’s mainline speed limit of 125mph.

Driver Neil Barker told the PA news agency: "We’ll just have to come back and try again."

Phil Whittingham, managing director of Avanti West Coast, said: "While we’re disappointed we’ve not broken the record today, we are proud to have worked with industry partners to showcase the vital role rail can play in enabling cleaner, greener travel and connectivity across the United Kingdom.

"We want to connect people and places to opportunity, so we’re pleased to champion the railway’s part in this with our record attempt, while supporting Action for Children and Railway Benefit Fund whose work supports families and individuals along our route."

Harrow Times: A piper plays as train driver Neil Barker gives a thumbs up after arriving at Glasgow Central Station from Euston. Credit: PAA piper plays as train driver Neil Barker gives a thumbs up after arriving at Glasgow Central Station from Euston. Credit: PA

Avanti West Coast collaborated with Government-owned Network Rail, which manages rail infrastructure, to plot the train’s path around passenger and freight services on the West Coast Main Line.

The train carried rail industry VIPs and subscribers to The Railway Magazine, who made a charitable donation.