To remortgage your house, you first need to know the options available to you. The first is to go to your bank or a high street lender. The second is to go to a mortgage broker.
High street lenders will offer you products tied to their bank or building society, this means that often you will not have access to the best range of products on the market. It often makes sense to go down the broker route ass they will have access to many more products and will be more likely to get you a lower rate.
You can do this by applying online at a site like this one and then you will be contacted by a broker who will assist you and answer your questions. Important questions to ask when you speak to a broker are:-
1) Do you give remortgage advice?
2) Do you offer products from the whole of market?
3) Are you independent?
4) What fees do you charge?
Fees are quite common as brokers rely on thses to make their income. Shop around to make sure that you are getting the best deal and be sure to read the small print.