Commuters have been warned of disruption on a Watford train line this afternoon.

London Northwestern Railway said there will be cancellations on the Abbey Line between Watford Junction and St Albans, which as of 2.45pm is set to last for at least another hour.

The problems - which have been caused by a "fault on a service" - were first announced at 1.30pm. The 2.45pm to St Albans and the 3.08pm to Watford Junction among those affected.

Update - the Abbey Line reopened at 3.45pm. 

A London Northwestern Railway spokesperson said:

“Services were subject to cancellation this afternoon (Monday 12 February) between Watford Junction and St Albans Abbey due to a train fault. Services resumed from 3.45pm.

“Any passenger whose journey is delayed by 15 minutes or more is entitled to compensation on the cost of their ticket via our Delay Repay scheme.”

📣 #LNRNEW - Fault on a service between St Albans Abbey and Watford Junction

Tickets for the 3.45pm train to St Albans are still on sale, but it is not clear whether the line will be reopened by then.

The operator said tickets would be accepted on the 321 bus and it has ordered rail replacement services.

LNR has been contacted for confirmation of how long the disruption is expected to last.