Thanks for the advice which appears to be unanimous, but First Direct have this on their guide.
Is this case with all mortgage lenders?
You will need a survey and have to pay for one, but only after your offer is accepted and you have applied for the mortgage. We went for the basic survey and it was done within the week we applied for the mortgage.
If you go and speak to a bank / mortgage advisor before you have found a house, they will go through your details and give you a certificate from a mortgage provider that shows the maximum you can borrow or the amount you want to borrow. This certificate basically says "Mr xxxxx can afford a mortgage of £xxx,xxx and we Nationwide will offer it with an interest rate of x%".
I believe this is valid for 90 days (may be wrong) but when you find your house, you show this to the estate agents after an offer has been accepted just to prove that you can get a mortgage and aren't going to waste their time. They might not accept an offer without this certificate.
After the offer has been accepted, go and see the bank / mortgage advisor where you got your "certificate" and give them the details of the house and they will apply for your mortgage - this should be the point that you pay any fees when applying for your mortgage!
My advice would be speak to banks / building societies and do it yourself, we went down the mortgage advisor route and shelled out £500 for the pleasure. Looking back it would have been just as easy to do it ourselves and deal with the building society directly!
If you aren't confident in doing it yourself, mortgage advisor is the way to go as they will do and check everything for you pretty much and takes one headache away from the buying process
Hope that helps mate, can remember how daunting the whole thing was when I went through it. If you already know all the above just ignore it, might help some people watching this thread in a similar position though.