Can you remortgage with the same bank?
A remortgage with the same bank is known as a product transfer. If the remortgage is easy, you may not require the services of a professional. However, if you're making changes to your mortgage, you'll probably need a mortgage adviser for the correct remortgage advice.
If you're not buying a new home, your mortgage provider should have your information from your first registration, making the application process easier. After that, it's just an easy change of mortgage product options.