hi there
we've had a shared ownership mortgage for 3 years now. we had no problem in getting one 3 years ago with 5% deposite with halifax but i am never going to go for a shared ownership deal again! just to warn you in advance, the conveyancing takes months and months to complete, and when it's your time to sell you are completely stung with additional costs incurred from all parties involved. The solicitors bill will be probable double a normal 'house move' bill. We are selling at the moment and are going to rent privately until the market sorts itself out. I really would advise you to think about buying into shared ownership, as you say the government make you think they're doing you a favour but I just feel as if we've been hung, drawn and quartered by the government etc.
Hopefully we will rent for a couple of years and then view the market at that stage. If prices come down we can then buy on the open market which will give us more choice where we want to live rather than snatching whatever shared ownership properties come up.
Hope this is helpful to you ...........