I am here to talk about what my Department is doing for transport to ensure that London remains an economic powerhouse, and I wish to continue on that line. I am sure that the hon. Lady will want to make that point to my colleagues—I am sure that they have heard it before. None the less, I do not think she would wish to stop all office development, or all offices with the potential for conversion being developed. It may or may not be the crack cocaine in certain areas, but it is providing essential housing in other parts of the capital. I have seen a number of social housing schemes being developed from old office blocks in south London as well, so one needs to be a careful about over-generalising.
The point I was making a moment ago is that the Government are, and have been, spending a huge amount of money on the tube upgrade system and the tube upgrade plan. The Mayor of London and the Secretary of State for Transport opened the Clapham Junction to Surrey Quays link of the London Overground, completing the overground orbital network, which allows people from south London to commute to the City and Canary Wharf without travelling through central London.
I know that will be of some benefit to the constituency of the hon. Member for Lewisham East (Heidi Alexander). I hear her points about the Bakerloo line. I say to her again that, as she will recognise, transport in London is a devolved issue, and it would be for the Mayor to come forward with proposals to the Government. Any proposal for London Underground to extend the Bakerloo line further in south-east London is a matter for the Mayor and TfL. They would have to come up with a plan, and potentially, if they seek to fund it in sponsorship with the Department, come to the Department. It is not for the Department to impose the proposal on TfL or the Mayor.