- 15 updates
Quick thinking from engineers prevented cement from setting in the Victoria Line signal room which would have caused even further disruption to commuters.
Peter McNaught, operations director for the Bakerloo, Central and Victoria lines, said it was lucky workers knew sugar would stop the cement setting.
Normal service has resumed on the line after engineers worked throughout the night to repair the damage.
Workers attempting to clean up the cement-filled Victoria Line signal room rushed to a local supermarket to buy bags of sugar to prevent it from setting.
Victoria Line services were closed between Warren Street in the centre of the capital and Brixton in the south after a cement leak from a nearby construction area damaged the control room.
The problem has since been resolved and the line was once again running a good service.
The operations director for the Bakerloo, Central and Victoria lines paid tribute to the engineers who "worked tirelessly through the night" to repair the damage.
The Victoria Line returned to normal this morning after concrete was pumped out of the signalling room.
Peter McNaught, operations director for the Victoria Lines, said:
A spokesman for Transport for London said the cement problem has been resolved and the Victoria Line is operating a good service.
London Underground's Victoria Line has reopened this morning after grinding to a halt when a cement leak damaged a signal control room.
The line was closed between Warren Street in the centre of the capital and Brixton in the south after the leak from an area where contractors were working on a long-term upgrade of Victoria Station yesterday.
A rail replacement bus service is now in operation and will be serving stations between Victoria and Brixton.
It will not be stopping at Green Park station.
Latest ITV News reports
The cement spill in Victoria Line signal room was an extraordinary blunder but the consequences could have been worse.