Are you being seen by the diabetic team at the hospital? I don't think you can get a pump via a GP (I could be wrong) - it would need to be from a consultant endocrinologist.
So first step would be get a referral to the diabetic clinic. Then you can get a bit more information on whether you meet the criteria, what pumps are available through the hospital and whether there is anything else you need to do to be eligible for a pump (complete a DAFNE course etc).