Power incidents sparked a ' total meltdown ' on London trains across the country . hundreds of passengers stranded on two carriages near the station . Police forced 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 .