Since the financial crash of 2008 and various legislation changes, it’s fair to say getting a mortgage is a lot harder than in previous years. The lender will follow a strict credit scoring policy which generates a computer decision to decide if you application is to be approved. If your application has been declined this is usually due to a low credit score.
The first thing to do is contact one of the credit referencing agencies (Experian, Call Credit and Equifax) and request your credit file. This will show the previous conduct of all your credit accounts and will also detail any issues including defaulted payments and county court judgments.
There are still a small number of lenders who will consider an application from an applicant with previous poor credit histories, however the interests rates tend to be a little higher than usual and they normally want a bigger deposit, typically 15%. By seeking professional advice from a qualified mortgage broker you may be able to find a mortgage to suit your requirements.