You first need to show that you can carb count and show that you are testing, and record keeping carbs, doses and how many units you are taking insulin wise. Look at the guide lines set out by Nice and talk to your diabetic team. Pumps aren't an easy option and require an awful lot of hard word, not only that but you won't get one straight away, their's lots of T's to be crossed and i's to be dotted. So if you are told you can have one, it won't happen over night, you may have to wait a while.