I'm actually a mortgage broker, and have been on this forum as I'm in the process applying for a fiancee visa for my partner.
It is possible for expats to the UK to get a mortgage here without a credit history. It's true that it's difficult to get a mortgage with high street lenders, however many of these lenders have an international division that are used to clients with little credit history. If you work for a large company, ideally multi national then it should be relatively straight forward.
You'll need to have a deposit, minimum being 15% of the purchase price and the rates are circa 4.5% for standard clients. With a deposit of 25% of the purchase price you can get a rate of circa 3.69%. There are better products (0.5%-1% lower) available if you meet certain income/savings criteria as well.
They normally want you to have been with your employer for at least 6 months, though if you are moving to the UK with the same company we could take that in to account. In any event it'll probably take 6 months for you to settle in the UK and find a suitable property.
Last edited by jojo; 22nd June 2012 at 12:50 PM.