Well at a risk of getting flamed.........
http://www.onlybbguns.co.uk/hg-104-m92f-beretta-hfc-hg-104-m92-gas-pistol.html?filter_name=HFC&page=3#.VM8tVixv7DI
RC10 code should get you 10% off = £27 delivered for a 21/22 round Green Gas pistol
(non-blowback - c'mon at that price I think xmas has long gone)
that is what I would buy or rather have bought, can get extra mags for it
(though to be truthfully honest - at that price for gun and what a mag in UK would cost
you may as well pick up another pistol @ £27 - is what I did, can get them overseas but P&P is extra)
doubt if you will get a better half decent performing pistol for that price in UK
(2-tone so no ukara needed)
Pistol is not an absolute must but then £27 looks good - not too heavy, though it ain't plastic
(jeez some EAP's weigh a lot more than this GG pistol)
but up to you what you get
btw it is same gun as:
https://bbguns4less.co.uk/products/SRC-GG-104B-Beretta-92-Replica-Gas-powered-Airsoft-pistol.html
HFC - SRC - STTi, same meat different gravy
difference is OnlyBBGuns will deliver it for £27 - BBG4Less want £30 + del
(best I can offer at that place is "crazyeyes" 7% discount code)
You don't "have" to go nutz on a custom DMR, a G&G M4 or Cyma AK will get you to a proper skirmishable level
£130 G&G, £30 GG pistol and you can start to seriously hold your own out there
(unless you suck at it like moi)
But it is up to you what stuff you get, but after spending LOADS on cheaper stuff and seriously regretting it
that is the stuff I would suggest you get, which should work very well and not give pi$$ poor performance
To each their own as they say