There is a lot of information available on the UK Government website for moving goods permanently to the UK.
This UK Government page has a list of links that you may find useful.
Here are some of the things you should consider:
Are you moving items by post?
Are you moving items in your luggage, car or van?
Are you moving items to Great Britain (England, Scotland and Wales) or Northern Ireland, or between both?
Find a step-by-step guide for all things relating to moving goods permanently to the UK on the UK Government website here.