NO trains are likely to run from Welham Green or Brookmans Park into London this evening, operator First Capital Connect has confirmed.

It follows a day of delays due to an overhead signalling problem close to Potters Bar.

An FCC spokesman told the Welwyn Hatfield Times: “We’ve still got delays, and the stopping services still can’t call at Welham Green, Brookmans Park or Potters Bar (toward London) because that’s where the wires are down on the slow line.”

Slow services from London to Welwyn Garden City are stopping at all stations, he said.

FCC says it is hopeful that delays on the Hertford loop line can be cleared before the evening rush hour.

A spokesman said: “It’s a situation beyond our control, but nevertheless we want to offer our apologies to people who have had a very difficult journey as a result.”