According to the Customs, there are about 5,000 companies currently trading with the UK but not with other countries outside the EU. Should it become a hard Brexit, they will, among other things, have to pay customs duties and VAT.

- They need to map their flows and find out what the fees are for the goods they want to import. The worst thing is if you wait for the last one and do not apply for a registration permit so you can manage your import and export flow. If you have not done your homework simply, it will be tough, says Åsa Wilcox, Head of Department for Effective Trade at the Customs Administration.

- So my tip and appeal, is that you prepare, read on, follow the development and get the contacts you need.

Significant increase in customs declarations

The UK is a major trading partner to Sweden. Should the country leave the EU without an agreement by October, the authority estimates that the number of customs declarations will increase by up to 20 percent, from today's seven million a year to between eight and 8.4 million. In 2019, the Customs Agency received an extra 90 million to strengthen its operations, part of which is preparing for Brexit.

- We wanted to recruit 70 people and equipment for 25 million. We have hired 35 for my business. Since then, we have also recruited a total of 105 people, but they also do other checks, says Åsa Wilcox.

Gothenburg harbor can be hit

For a period of time, she estimates that there is a risk of logistical stoppages that could affect the entire import operations in that case.

-In Gothenburg harbor, for example, we have many shipments from the UK. If you do not then have customs documents ready and ready for smooth handling, it will become noticeable and there is a risk that it may hit the other flow - even those who today have an import that works. That's my fear, says Åsa Wilcox.