Hi Ewan
I have been T1 since 1970, been on pump now for last 18 months and would never go back to the old MDI way. It took some time to get sorted like Laura mentioned it needs some work to get it working well, also takes a while to get use to being connected, but now it feels normal and even miss it when its disconnected (for shower, bath etc).
Also have Dex G4 which I fund myself for last year, this is great too if you can afford it, giving BG every 5 mins and warning of rises and falls. Now I do not get surprises with hypo's and can fix them before they happen. Also stops the mood swings as it helps to stop the BG swings.
Chas