Major disruptions are expected on southeast England rail lines after "multiple incidents" on Wednesday morning. Govia Thameslink Railway says trains across the Gatwick Express, Thameslink and Southern networks are affected. A train derailed inside the Selhurst depot and prevented trains from departing, according to Network Rail and there was also a fault with the signalling system. A "do not travel" warning was issued, and while it has been lifted passengers are still likely to experience significant delays. #UKRail #Trains #UK #C4News