@Joe
as some 1 rightly stated
the SSD is a luxury rather than a necessity
you could swap for a normal HDD and that would save you
around £90 now and you can easily add 1 down the line.
the h50 ive heard is a decent watercooler for cpu, but unless
ur going to overclock you could easily get a good air cooler
that would do the business well. that could save you another £25
the i7 950 is basically entry level now if your going for an i17 build
because its so close to the 930 in price. if you want to save another
£21 you could drop to the 930 and not see the difference in games.
so you could shave another £131 off your lateast spec post
with minimal if not no performance loss.
In addition:
to get another £68 off you could drop to an EVGA 460.
but this is then starting to eat into performance and bring
th necessity for an upgrade closer, which "you" said you dont want.
now that your asking about a build around £800 throws
everything ive said and speced up in the air basically.
go i5 and 460 like the guys said to get around the £800 mark
but upgrading will be much sooner than an i7 and potential 470sli
goodluck