Power failure sparked a 'total meltdown ' on London trains across the day . The Met Office said it was likely to be one of its worst ever days in terms of power cuts and train cancellations as temperatures plummeted below freezing at stations including, Clapham Junction, Waterloo, Waterloo East Police boarded trains to hand out water and paramedics had to be on hand .
Power failure sparked a 'total meltdown ' on London trains across the day . Thousands of passengers stranded on two trains near Clapham Junction . Police boarded trains to hand out water and paramedics had to be on hand .