Brexit Transition
https://www.gov.uk/transition

Import goods from outside the EU: step-by-step
https://www.gov.uk/import-goods-outside-eu

Apply to use simplified declaration for imports
https://www.gov.uk/guidance/using-simplified-declarations-for-imports?step-by-step-nav=849f71d1-f290-4a8e-9458-add936efefc5

Making an import declaration in your records
https://www.gov.uk/guidance/making-an-import-declaration-in-your-records

Making an import supplementary declaration
https://www.gov.uk/guidance/making-an-import-supplementary-declaration

Making an import supplementary declaration without authorisation from 1 January 2021
https://www.gov.uk/guidance/making-an-import-declaration-in-your-records-without-authorisation-from-1-january-2021

List of goods imported into Great Britain from the EU that are controlled from 1 Jan 21
https://www.gov.uk/guidance/making-an-import-declaration-in-your-records-without-authorisation-from-1-january-2021

Prepare to import goods from the EU to Great Britain from 1 January 2021
https://www.gov.uk/prepare-to-import-to-great-britain-from-january-2021

Delaying declarations for EU goods brought into GB – 1 January 2021
https://www.gov.uk/guidance/declaring-goods-brought-into-great-britain-from-the-eu-from-1-january-2021

Customs declarations for goods you bring or receive into the UK
https://www.gov.uk/guidance/customs-declarations-for-goods-brought-into-the-eu

Get UK customs clearance (importing) step-by-step
https://www.gov.uk/import-customs-declaration

Finding commodity codes (imports and exports)
https://www.gov.uk/import-customs-declaration

Check when you can account for Import VAT on your VAT return from 1 January
https://www.gov.uk/guidance/check-when-you-can-account-for-import-vat-on-your-vat-return

Get someone to deal with customs for you
https://www.gov.uk/guidance/appoint-someone-to-deal-with-customs-on-your-behalf

List of customs agents and fast parcel operators
https://www.gov.uk/guidance/list-of-customs-agents-and-fast-parcel-operators

Trade Tariff
https://www.gov.uk/trade-tariff

Apply to use simplified procedures (import – form C&E48)
https://www.gov.uk/government/publications/import-and-export-simplified-procedures-application-ce48

Customs Freight Simplified Procedures – software providers
https://www.gov.uk/guidance/list-of-software-developers-providing-customs-declaration-support

Notice 252: valuation of imported goods for customs purposes, VAT and trade stats
https://www.gov.uk/government/publications/notice-252-valuation-of-imported-goods-for-customs-purposes-vat-and-trade-statistics

Help and support for UK transition – webinars
https://www.gov.uk/guidance/help-and-support-for-uk-transition

Trader Checklist
https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/943013/Trader_checklist.pdf

Check an EORI number
https://www.gov.uk/check-eori-number

The Border Operating Model
https://www.gov.uk/government/publications/the-border-operating-model

Check your goods meet the rules of origin
https://www.gov.uk/guidance/check-your-goods-meet-the-rules-of-origin

Check if you need to declare goods you bring into or take out of the UK
https://www.gov.uk/check-customs-declaration

Check if you’re established in the UK for customs
https://www.gov.uk/guidance/check-if-youre-established-in-the-uk-or-eu-for-customs

Apply to access CHIEF
https://www.gov.uk/guidance/apply-to-access-customs-handling-of-import-and-export-freight-c1800

Claiming preferential rates of duty between the UK and EU
https://www.gov.uk/guidance/claiming-preferential-rates-of-duty-between-the-uk-and-eu-from-1-january-2021