he proposed extension of the East London line to my constituency and the London borough of Lewisham more broadly?and to places further south?is welcomed almost unreservedly, but I have requested this debate because I have to use the word "almost". The extension has implications that are not as desirable as the extension itself. As we have some of the most congested commuter lines in the whole country, hon. Members will understand the concerns of my constituents.

We also look forward to the as yet unannounced transfer of responsibility?I am sure that my hon. Friend the Minister will confirm it at some point, if not today?for the stations along the route of the extension from the train operating company, Southern, to Transport for London, with a subsequent programme of investment and improvement. In my constituency, that will involve Honor Oak, Forest Hill and Sydenham stations and, just outside it, Penge West, Anerley and Crystal Palace. We look forward to the improved standards of service and security for commuters that TFL provides for its stations, compared to the current operator.

The increased choice and services for commuters are completely desirable, and my constituents look forward to enjoying them. The expansion of the Oyster card system, which is more convenient and cheaper for people travelling around London, will also be welcome, and it will be extended to the over-ground Network Rail services into London Bridge. The extension of the East London line will also mean that many people will be able to avoid using zone 1, as they will be able to travel around the centre of London, instead of having to go through it. That will produce savings not only of time but also of cost for many people. My journey to the Palace of Westminster takes me from Forest Hill station to London Bridge, where I change to the Jubilee line and travel to Westminster underground station. At a meeting with London Rail last Monday, I pointed out that when the new line is operating I will be able to take the East London line to the Canada Water interchange on the Jubilee line and travel through London Bridge to Westminster. London Rail confirmed that the cost would be the same for either journey, so that will be of benefit to people travelling from my constituency and around London more generally.