Ok, so I found out who my local Mp is, Stephen Hammond (http://www.stephenhammondmp.com/), he has a section on his site for writing to him, so I could not resist.

“Added: 05 November 2008, 21:42
Dear Stephen, As a resident in the centre of Wimbledon I have very limited outside space, but long to grow vegetables for my own consumption. This is born from a growing need to eat healthier and also battle the rising costs of food. Allotments in the area are subject to up to a 10 year waiting list, with the quickest being 3-6 months but in remote locations. What can be done to provide more allotments in the Wimbledon central area.

Phil Geraghty

The provision of allotments is really a matter for the local council. Having read your message I have written to the council on this issue and will update this page as soon as I have had a response. If you would like to contact the relevant department in the meantime, please call 020 8545 3665. “

Not sure what I was expecting as a response, the reply was prompt, I feel more engaged, but I dont think im any closer to a solution, but I do feel like I have help available.