You can help speed up your mortgage application by knowing what information the lender is looking for. When you apply for a mortgage you will need to provide proof of your identity, address, salary and employment status.
The lender may also ask for written references from your employer, your bank and your current lender or landlord. They'll also run credit checks to make sure you've paid off your debts in the past.
You can get a decision in principle (known as a "DIP") from a lender even before you've chosen your final property. This shows whether they're prepared to lend to you and how much. Most lenders can give you a decision in principle online as well as through the post.
Once you have chosen your property the lender will want to arrange for it to be valued. In some cases the lender will not tell you the actual value but will confirm if they are willing to lend you the required amount.