The government has announced future plans for UK borders, setting out its intention to introduce full import controls for goods moving from the EU to Great Britain after the transition period ends on 31 December 2020.
This means that all goods entering the UK from the EU will be subject to the same checks and controls as goods coming from the rest of the world.
Business exporting to the EU will need to complete customs declarations, typically done electronically and ahead of the border crossing, and undertake other regulatory, risk-based checks.
The government has also announced that it has extended its grant scheme to fund customs agents. There is £7.5 million available for businesses to hire or train experts to deal with customs declarations. See more here:
https://www.gov.uk/government/news/hmrc-extends-customs-grant-funding-deadline