A MAJOR signal failure on the Thameslink line caused commuters delays of up to 20 minutes during today s morning rush hour. The signal problem happened at Farringdon Station at 7.20am and resulted in a speed limit being imposed on all trains going through

A MAJOR signal failure on the Thameslink line caused commuters delays of up to 20 minutes during today's morning rush hour.

The signal problem happened at Farringdon Station at 7.20am and resulted in a speed limit being imposed on all trains going through the junction.

And southbound Moorgate services going via Farringdon had to terminate at Kentish Town instead as no trains could call at Farringdon.

Normal service was resumed on the line when the speed restrictions were lifted at 8.20am.

A spokesperson for Thameslink line operator First Capital Connect (FCC) said that they had to impose a speed limit because their train drivers had to be talked through each junction to make sure there would not be a collision.