Type1's get an prescription exemption certificate when we hit 16 I think (need to renew every 5 years) so we don't need to pay for prescriptions (I was diagnosed in 1977 - I have never paid for a prescription in the UK)
Insulin pens, needles, test strips will all be on prescription so will be covered by that exemption certificate
As for extra things like iPort's and pumps and sensors, these will need funding from the hospital - and if you get funding then it is covered as well