You will need to review your existing mortgage and then you can consider other options and possibility a complete replacement. The mortgage market is constantly changing so it is often possible to find some improvements.
Moving home is a good time to review insurance. Particularly Mortgage Protection and Household Insurance both in terms of contents but also buildings.
Moving home is often as a result of a growing family or a new job or other changed circumstances. In each case your circumstances may well be different but in every case it is the right time to align your financial planning with your life stage.