Thanks for your advice Divvy.
I've rang births,deaths and marriages and thankfully its not as difficult as I thought to get XP's name off of the birth certificate. I'll try and go through that process this week some time. My solicitor is on holidays until Jan 21 so as soon as he gets back I'll ask him if we can put the subpoena in. I have now put my application in for family tax benefit and have been told I have 13 weeks to apply for child support otherwise I wont get my full entitlements.
It's a tough situation which I would like to run away from but I know I have to try and be a grown up and realise I have a gorgeous little man to support and provide for. At the end of the day its not like the other party will have to pay much any way as I work full time and I'm on a good income. I just wish he wasnt so stubborn and I wish that there was someone else out there who loved my little man as much as I do...