Train services between Welwyn Garden City and London’s Finsbury Park may be cancelled or delayed following an “operating incident”.

Govia Thameslink’s Great Northern Twitter account tweeted this afternoon to say services between the two could be cancelled or delayed by up to 15 minutes, citing an earlier Network Rail track safety inspection and an earlier “operating incident”.

It is not clear when services will return to normal, but updates are expected to be posted via www.greatnorthernrail.com/travel-information/plan-your-journey/service-updates.