In reply to Paul Doran:
"Nuts Set 1-14 - Wild Country Rocks Anodized"
Rockcentrics/Torque Nuts are better than the larger Rocks, lighter and more placement options, so rather than Nuts 1-14 I would suggest getting either
WC Anodized Rocks Set 1-8 plus WC Wired Rockcentrics 3 and 4 (equivalent to Rocks 9 and 10 but lighter and more placement options)
or
WC Classic Rocks Set 1-10
and then medium/large WC Rockcentrics or DMM Torque Nuts on dyneema.
Buying WC Rocks Set 1-8 and WC Rockcentrics Full Set would be cheaper but the smaller Rockcentrics on dyneema can be a pain to place and retrieve.
"Phantom Quickdraw Pack DMM x 2 (10 in total)"
Good choice, although you might want to convert some to slingdraws and stick a Revolver on one of them. Just keep the spare tapes, you'll end up using them to make up extra quickdraws in the future.
For short routes which 6 to 8 quickdraws should suffice, but the others will be handy for longer pitches and on harder stuff later so it is still worth getting the cheaper multipacks.
As far as the smaller size of Phantoms goes I only find this a problem when clipping the rope into runners with gloves on in winter; they're absolutely fine for belays, clove hitches, the gear end of quickdraws etc.
"3 wild country technical friends set"
Perfect for gritstone/granite/sandstone, start with whole sizes and supplement with half sizes later. If climbing mostly limestone either get the half sizes or don't bother with any cams for now (get a second set of wires 1-8 instead, maybe getting DMM Walnuts rather than more WC Rocks).
DMM 4CUs also good, exactly same sizes so just look around for the best deal.
If you plan on using cams in winter in the future then get BD Camalots or wait for the DMM Dragons, much easier to use with gloves on.
"10 Phantom Karabiners"
Good choice, bearing in mind comments above about winter use.
"3 other screwgate karribners, dont understand different closing mechanisms, can someone advise?"
Two should be enough, Petzl Attache 3D or similar for belay plate and a DMM Boa for belays. You don't need extra screwgates for your anchors, when you get to the top of a pitch you'll still have some phantoms left on your harness and you can double those up if you want to (bear in mind you can use your racking biners here if needs be, particularly on single pitch where you don't need to worry about racking up for the next bit).
Normal screwgates are fine unless you're really careless/forgetful, in which case get something with a fancy autolocking gate or better still just don't climb.
"Slings 16mm 3x120cm, 1 x 240cm, 2 x 60cm"
You certainly don't need all those. I'd just get
2 x 60 cm (plus extra if you want to make up slingdraws)
1 x 120 cm (maybe 2 if doing multi-pitch and your partner hasn't got one).
Suggest 8 or 10 mm dyneema for general use, Beal 6 mm dyneema for slingdraws. Don't bother with the 240 cm sling, they're totally unnecessary for UK rock climbing.
"Rope 10-11mm"
11 mm is very heavy, get 10 mm. If you'll end up using it for sport climbing as well don't get less than 60 m.
"Helmet?"
Definitely. For cragging on nice clean single pitch stuff then one of the super light foam ones would be okay. If you'll also be doing mountains / sea cliffs / winter stuff then you'd be better with one of the combined foam and hard shell models. That said, the most important thing is that it's comfortable and on your head rather than in your bag.
Whatever kit you do end up buying make sure you don't just end up carrying all of it up every route you do, get into the habit of looking at the route and only taking what you think you'll need (plus maybe a little extra to be on the safe side when you're starting out).
Enjoy buying your first rack, but make sure you enjoy getting out there and using it more!