@shadowfax - Hi Kev, tried a few of these, there's a site called axesrus, they have some nice bits on there, also eBay is a good resource if you're willing to wait for deliveries from the USA.
I built my strat this way, after being totally unimpressed with Fender strats, played a lot, owned one, Squier are absolutely FANTASTIC, I have a Tele classic vibe 1950's, and it's one of my favourite axes...anyway back to the strat...
I bought a mighty mite maple neck, gibson width at the nut, 22 frets, ebony fretboard, for about 100 USD, shipped and got nabbed for customs, so that bumped it up to 120 GBP, but still way way cheaper than over here.
then on ebay I bought a quilted maple over a ash body - heavy as hell - for about another 100 USD, didn't get caught by the rozzers for that.
pickups were ebay Fender fat 50's for about 75 quid, the sperzel tuners - also ebay for about 40 quid, screws, switches, scratchplate, trem, bridge etc. axesrus, so a custom strat quite a saving, it sounds marvellous, and feels quality, but best of all it was a cinch to put together, everything fitted, no buzzing on the frets, just a bit of courage when it comes to drilling out holes for the tuners...
But in all honesty I would by a Squier classic vibe whatever you want, I've played strats and teles and they are very very good indeed, but you might need to swap out the pickups, which is a simple job.
As for my strat... I wouldn't swap it for any Fender.
When I was 15 I did try and build a guitar out of plywood, car filler and pine, spurred on by Brian May making his out of a mantlepiece, I think
@MichaelA 's effort would be better...and maybe the actual mantelpiece before Brian and his Dad started wold have been more playable...
Hope this helps