The report attributes some of the delays to the major Transport for London (TfL) upgrade programme, which is set to be completed in June 2012 ahead of the London 2012 Olympic Opening Ceremony on July 29, but it claims that many of the problems were caused due to train faults.

"Industrial action accounted for much of the increase in delays across the network," said chair of the Transport Committee Caroline Pidgeon in the report.

"However, on lines with the most delays, such as the Jubilee and Victoria, the main cause of the increase was problems with assets such as operating systems and trains.

"TfL has told us it is now responding to these problems and has learned lessons from the Jubilee line upgrade."

The report also stated major delays were caused due to strikes and called for a payment deal to be sorted before London 2012 so the Assembly will be delighted after London Underground (LU) today announced it had reached agreement with train drivers' unions over temporary changes to working arrangements and payments during the London 2012 Games.

The agreement means that in return for agreeing to temporary changes to existing working arrangements during the Games, all train drivers employed by LU will receive a one-off payment of £500 ($790/€577).

In addition, shifts of a certain duration or those which finish after 1.30am will attract extra payments.

"This agreement is a good deal for London Underground, our drivers and those thousands of customers who will be attending the London 2012 Olympics and Paralympics Games," said LU managing director Mike Brown.

"LU is committed to ensuring that the train service we provide contributes to the successful operation of the Games and I am pleased that we and the unions have been able to engage in constructive dialogue to reach this agreement."

Around 3,500 Tube drivers are covered by the agreement, while LU plans to run Tube services around an hour later than normal during the Games, on all lines, with last trains leaving central London between around 1.30am and 2am.

Extra services will run on lines serving the Olympic Park to coincide with the end of events in the evenings, meaning additional services from around 10pm.

Contact the writer of this story at [email protected]