Reply from my MP

"Dear Mr ....

Thank you for your letter regarding EDM 1407.

I very rarely sign EDMs* as it [is] unusual for them to be actually debated in Parliament and thus I deem them an ineffective means of producing a debate on an issue. However, I have taken the liberty of forwarding a copy of your letter to the Chancellor ... Alistair Darling MP, so that he may respond to your concerns and outline the government's position on this issue. As soon as I am in receipt of a response, I will be in touch"

* I checked. My MP has signed 2 EDM's in the last year; EDM 486 (seems very sensible) and EDM 1454 (seems totally gimmicky, but fair enough). So the 'very rarely' seems to stack up, at least.