in regards to bying a house, you need at least minimum of 10-15k this is to cover fees ect and possibly deposit, depending on how much the house/flat is. there are other schemes out there New Buy Schemes.
New Buy Schemes = where the government pay a percentage/shares towards your new property and you get a morgage for the rest which is normally 25% so instead of having to save 25k you only need to save 10k, however you do have to pay the government back a certain amount each month, if mind remembers is about £130 a month so it's basically like rent, the good thing about this you can buy more shares from the goverment and end up owning the house fully. if you are looking to buy try and get an AOP which is acceptance on principle. with this it Doesn't affect your credit score as it's only an enquiry to whether your mortgage is accepted, however i would not do it more than 1 time for at least a couple of months as it will look like your desperate.
hope this helps
dave