An eight-year-old boy found trespassing on London Underground tracks was led to safety by a Tube cleaner, it has been revealed.
London Underground said the cleaner spotted the boy on the tracks at Stanmore last Saturday.
Nigel Holness, LU's operations director, said: "Jubilee line services were disrupted at Stanmore after an eight-year-old boy was spotted trespassing on the railway by a cleaner. The cleaner lifted him back on to the platform without injury, where station and train staff stayed with him until police arrived.
"We are very grateful to the cleaning contractor and to our station and train staff for intervening to quickly respond and follow our established procedures to bring the incident to a safe conclusion."
Bob Crow, leader of the Rail Maritime and Transport union, said the two incidents raised "serious questions" about plans by London Mayor Boris Johnson for driverless Tube trains.