Have a look at the forums at moneysavingexpert.com - there's alot of advice to be had about homebuying/mortgages, etc. We're just in the process now, so I've been researching like crazy!
I think the consensus just now is to wait - house prices are predicted to continue to fall quite a bit more, and unless you can get a place for 20 - 30% off peak 2007 prices, it's not a good idea just now. We're moving this month, but we got our new place for a whopping 37% off what it was worth in 2007, and a whole £40k cheaper than what it is valued at currently. And to sell our place, we had to knock about £25k off what it was worth at the peak in order to undersell everyone else trying to sell in this stagnant market.
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If you continue saving like mad for another year or so, your deposit will go ALOT further once prices have come down even more. Mortgage companies aren't really offering attractive deals for people that have less than ~15-20% deposits just now - once lending loosens up a bit and once prices come down more, you'll be in a much stronger position. Any less of a deposit, you might be looking at negative equity in a short time in this market. Plus, you can go in and make a harder bargain on places that have been on the market and not selling for a long time.
And remember, solicitor fees/survey fees add up - I think ours will come to almost £1600 once we're through. That's on top of your deposit.
Start doing your research. Once you start reading and visiting forums, it might become a little bit of an addiction, like it has done with me! No one has seen anything like this market for a very long time, and it makes for some interesting reading!