Hi,
You can declare most personal goods by making a declaration by conduct or an oral declaration. These methods of declaring your goods are simpler than other methods, but they are still defined as legal declarations.
You can see guidance below for more information on how to declare personal goods:
Check how to declare personal goods you bring into or take out of the UK
If you arrived for the purposes of marriage or study, or have approval to use transfer of residence relief, for example, a unique reference number, evidence of this should be provided to the customs officer if you are asked.
Thank you.