Broken down train blocks Welwyn Hatfield and Potters Bar rail route

Great Northern services are disrupted. Photo: Great Northern

Great Northern services are disrupted. Photo: Great Northern - Credit: Archant

A broken down train is causing rail delays on the Great Northern route affecting numerous stations in Welwyn Hatfield and Potters Bar on Wednesday, May 2.

The blockage, between Alexandra Palace and New Southgate, is causing delays on one of the Great Northern northbound lines between London Kings Cross/Moorgate and Stevenage.

This may affect journeys through Welwyn Garden City, Knebworth, Welwyn North, Welham Green, Brookmans Park, Hatfield and Potters Bar.

Services were diverted onto the other available northbound line to bypass the blockage.

One of the southbound lines was also temporarily blocked to allow engineers to see the train.

Although all lines are now clear, “services may be subject to disruption whilst we work to get everything back in place”, said Great Northern in a tweet.

The company pointed out that it’s not their train that has broken down.

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Great Northern tickets are being accepted on reasonable routes served by Greater Anglia and London Underground.

Normal service is expected around 8pm.

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