What mortgage documents will I need to apply for a mortgage. Here the UK mortgage expert Gary Williams explains what mortgage documentation you will require when applying and arranging your mortgage. Part of a series of information videos from The Mortgage Hotline the main independent mortgage brokers in the UK (view them all here www.themortgagehotline.co.uk) offering mortgage / remortgage help and advice so that you can make better mortgage decisions â save a lot of money â when applying, arranging and getting your own mortgage. If you are looking for a mortgage expert to guide, help, advise, and compare mortgage rates with you, and to apply and arrange your mortgage then ask the mortgage expert Gary Williams the UKs leading mortgage advice expert. Visit www.themortgagehotline.co.uk - or FREEPHONE for further details on 08000 372 372.