Hi Elux,
Take a look over at the money section of this board as there's quite a few threads about building up credit. Also, some postings about buying a house here etc. There's quite a few 'recent' changes to buying a house now, alot less choice in terms of mortgages. The 'general' consensus being a 40% deposit on a property gets you the pick of the current crop of best rate/deal mortgages.
Credit rating plays an important part, I'd also 'suggest' that a years worth of credit history isn't going to be enough in the current climate. If you also have say a 5 or 10% deposit, you're only likely going to be considered for what's now higher (proportionally) rate mortgages.
I'll also 'assume' for a second you're not a UK citizen, and therefore in the eyes of the financial and legal system etc - a 'foriegner'. During the 'Good' times of the last few years before the current economic doldrums, the mortgage industry 'generally' would lend to people in this catagory who had a minimum 25-30% deposit. I can only speculate that now, for a foriegner to purchase a property here they'd need possibly substantially more than the 40% figure bandied around as that seems to apply to UK citizens.
Hopefully you've got that kind of financial liquidity - if so speak to the banks and lenders to see what they offer ! if you can get a tracker, with interest rates being an utterly low 0.5% you'd do good getting one. Of course as the economy recovers, you will see payments rise. If you do go for a fixed rate etc, be wary of when the low fixed rate period end and potentially re-negotiating a new deal.
there are quite a few things you can do to help you with you're credit rating, have a look on the threads and post up more of your situation for some help!
Cheers! DtM! West London & Slough UK!