major disruption on railway line to london st pancras after signal fault

Technical issues at St Albans City means trains running between the major London station and Luton are all severely delayed by up to 45 minutes (Picture: TOLGA AKMEN/EPA/Shutterstock)

Trains from London St Pancras International are being delayed or cancelled after a signalling system fault.

Technical issues at St Albans City means trains running between the major London station and Luton are all severely delayed by up to 45 minutes or ‘revised’.

East Midlands Railway services between Sheffield,Nottingham and Corby to and from London St Pancras have all been affected.

Thameslink services between Bedford,East Croydon,Luton and Rainham have also been disrupted.

Disruption is expected to last until 4pm today.

National Rail said: ‘Trains are being stopped at red signals in each direction,and drivers are being given verbal instructions to continue through an area with signalling problems.

‘This takes extra time and is leading to congestion and service changes.

‘Network Rail response staff are investigating as quickly as possible,and we are monitoring progress updates.’

How to get a refund on your train tickets

Most train operators in the UK offer Delay Repay.

It tracks the delay of your train automatically and signals when you can claim compensation.

This can be done through the TrainLine app or through the train operator if you bought the ticket directly from their website. You can find a full list of compensation amounts each train company pays here.

You are eligible if you have a Flexible or Advance ticket for single-leg trips.

To get the latest news from the capital visit Metro's London news hub.

It is not available through open returns or Season Tickets.

You can claim a refund for any unused part of your journey within 28 days.