Please turn on JavaScript. Media requires JavaScript to play.

The £9bn modernisation of the UK's West Coast mainline, linking London and Glasgow, has been completed.

Network Rail says services will be improved and journey times cut by up to 30% - but not quite as fast as in this video clip.

With the help of a footage which has been speeded up, watch the journey from London to Glasgow in just five minutes.

For technical reasons a short stretch near Milton Keynes is missing from the route.