Peter McNaught, operations director for the Victoria Lines, said:
Our engineers have worked tirelessly through the night and have successfully repaired the damaged signalling equipment.
A good service is now operating across the Victoria line.
We again apologise to our customers who were affected by yesterday’s disruption.
More top news
Adele surprised a fan with an accidental kiss on the lips when as she said hello at a show in Vancouver, Canada.
Jeremy Corbyn has denied allegations of bullying saying "intimidation is not allowed" in the Labour party.
A woman remains in hospital after she was badly burnt by an electric shock in north London.