I agree with the other 2 gentlemen. Depending on budget, I would either go with the AT1416VS (£750) or the AH1218VS (£300). George has a few of the AT1416VS, and I have used it a few times in other places. A very nice lathe and will go a very long way. I would definitely recommend variable speed. If you have access to a club, seek advice there, too.
Sometimes you can also pick up a decent lathe from ebay (but you need to know what to avoid). The Union Graduates are very sturdy machines and used by many wood turners, and often available in a similar range (up to £700). The Jet 1015VS would also make a nice starter lathe, and there is one on offer for £200, that would be a good deal, and it doesn't need a lot of space.