Sorry peeps,
Didn't realise that this subject has been raised before - I'm new to the site. However, in answer to a couple of the replies;
1. It's not a choice from the MoD's point of view whether they make contributions for that element of your pay or not. It's a point of law.
2. I am professional advice. I'm qualified up to Financial Planning Certificate 3 (FPC3) which encompasses pension law.
The reason for my question is to find out whether anyone had yet succeeded in receiving this element of their pay into their pension payments. I'm leaving in 2009. Worth a fight do you think?