All of the DIY starter kits I've seen include lots of items I would never use, and you pay for those things whether you want them or not when buying a kit.
All you need to get started is:
One or two 2 ml Luer lock syringes
One or two 10 ml Luer locksyringes
A couple of 14 to 16 gauge blunt needles for VG, the longer the better so you can get liquid out from near the bottom of your bottles
A couple of 22 to 26 gauge blunt needles, again the longer the better
Bottles of your choice
Vegetable glycerine
Propylene glycol
Flavorings of your choice
Nic
juice
I'm sure someone in the UK forum can direct you to sources.