Brexit: What you need to know about the UK leaving the EU (2025)

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Brexit: What you need to know about the UK leaving the EU (1)

After months of negotiations, the UK and European Union finally agreed a deal that will define their future relationship, which comes into effect at 23.00GMT on 31 December.

I thought the UK had already left the EU?

It has. The UK voted to leave the EU in 2016 and officially left the trading bloc - its nearest and biggest trading partner - on 31 January 2020.

However, both sides agreed to keep many things the same until 31 December 2020, to allow enough time to agree to the terms of a new trade deal.

It was a complex, sometimes bitter negotiation, but they finally agreed a deal on 24 December.

So what changes on 1 January?

The deal contains new rules for how the UK and EU will live, work and trade together.

While the UK was in the EU, companies could buy and sell goods across EU borders without paying taxes and there were no limits on the amount of things which could be traded.

Under the terms of the deal, that won't change on 1 January, but to be sure that neither side has an unfair advantage, both sides had to agree to some shared rules and standards on workers' rights, as well as many social and environmental regulations. You can read more detail on other aspects of the deal, including more on travel, fishing, and financial services, here.

Freedom to work and live between the UK and the EU also comes to an end, and in 2021, UK nationals will need a visa if they want to stay in the EU more than 90 days in a 180-day period.

Northern Ireland will continue to follow many of the EU's rules in order to avoid a hardening of its border with the Republic of Ireland. This will mean however that new checks will be introduced on goods entering Northern Ireland from the rest of the UK.

Now that it's no longer in the EU, the UK is free to set its own trade policy and can negotiate deals with other countries. Talks are being held with the US, Australia and New Zealand - countries that currently don't have free trade deals with the EU.

Image source, Reuters

Will there be disruption at the borders?

There may not be new taxes to pay at the border, but there will be new paperwork, and the potential for it to cause delays is a serious concern.

"This is the biggest imposition of red tape that businesses have had to deal with in 50 years," according to William Bain from the British Retail Consortium.

The UK says it will delay making most checks for six months, to allow people to get used to the new system, but the EU will be checking paperwork and carrying out checks from day one. So if businesses are not prepared, or do not fill in the new paperwork correctly, it could cause delays and backlogs at ports like Dover.

The government has known about this for years, and has made plans to divert trade to other ports around the country and has built lorry parks in Kent, to avoid gridlock on the roads.

It's difficult to predict what the scale of any disruption might be, but government minister Michael Gove has said that UK businesses should prepare for some "bumpy moments".

Is this finally the end of having to hear about Brexit?

Sadly, no. Decisions are still to be made on data sharing and on financial services, and the agreement on fishing only lasts five years.

Also while the UK and EU have agreed to some identical rules now, they don't have to be identical in the future, and if one side takes exception to the changes, they can trigger a dispute, which could ultimately lead to tariffs (charges on imports) being imposed on some goods in the future.

Expect the threat of disputes to be a new constant in UK-EU relations.

What Brexit words mean

The last few years have seen many words and phrases enter our lives. We haven't used them here, but politicians do use them. Here's what some of them mean:

Transition period: The 11-month period following the UK's exit from the EU (finishing at the end of 2020), during which time the UK has followed EU rules, to allow leaders to make a deal.

Free trade: Trade between two countries, where neither side charges taxes or duties on goods crossing borders.

Level playing field: A set of rules to ensure that one country, or group of countries, doesn't have an unfair advantage over another. This can involve areas such as workers' rights and environmental standards. Free trade agreements like the Brexit deal often include level playing field measures.

Tariff: A tax or duty to be paid on goods crossing borders.

Related Topics

  • Ireland–UK border
  • Boris Johnson
  • UK Parliament
  • European Union
  • Brexit

More on this story

  • What is the Brexit transition period?

    • Published

      1 July 2020

  • What trade deals has the UK done so far?

    • Published

      26 January

Brexit: What you need to know about the UK leaving the EU (2025)

FAQs

What are the consequences of the UK leaving the EU? ›

The economic effects of Brexit were a major area of debate during and after the referendum on UK membership of the European Union. The majority of economists believe that Brexit has harmed the UK's economy and reduced its real per capita income in the long term, and the referendum itself damaged the economy.

What are two main reasons that the UK is leaving the EU? ›

  • Sovereignty.
  • Immigration.
  • Demographic and cultural factors.
  • Economy.
  • Anti-establishment populism.
  • Role and influence of politicians.
  • Presentational factors during the campaign.
  • Policy decisions.

What will happen to EU citizens in the UK after Brexit? ›

Before Brexit, free movement rules gave EU citizens the right to live and work in the UK without requiring permission. From 1 January 2021, free movement ended and EU citizens migrating to the UK are subject to more restrictive immigration rules, which are the same as those facing citizens from non-EU countries.

What word is used to describe the UK leaving the EU? ›

Brexit is an abbreviation of two English words: 'Britain' and 'exit' and refers to the withdrawal process of the United Kingdom (UK) from the European Union (EU).

Was Brexit good or bad for the UK? ›

The average Briton was nearly £2,000 worse off in 2023, while the average Londoner was nearly £3,400 worse off last year as a result of Brexit, the report reveals. * It also calculates that there are nearly two million fewer jobs overall in the UK due to Brexit – with almost 300,000 fewer jobs in the capital alone.

What are the disadvantages of Brexit? ›

Drawbacks of Brexit

Therefore, by leaving, the UK would lose negotiating power and free trade with other European countries. As the UK tries to recreate trade deals with other countries, they may get less favorable results. The uncertainty of Brexit also causes volatility and affects businesses operating within the UK.

Has Brexit been a success? ›

Britain's Brexit Success

UK exports are growing – reaching £870 billion in the 12 months to November 2023, and services exports are at an all-time high03. Since the referendum, the UK economy has grown faster than Germany, Italy, and Japan and at a similar rate to France (end-Q2 2016 – Q3 2023)04.

Can the UK rejoin the EU after Brexit? ›

Process. Potential enlargement of the European Union is governed by Article 49 of the Maastricht Treaty. If the UK applied to rejoin the EU, it would need to apply and have its application terms supported unanimously by the EU member states.

Why are Brits leaving the UK? ›

Among key reasons given for wanting to leave, 39 per cent of respondents cited the cost of living crisis, 28 per cent dissatisfaction with the current government, while 19 per cent said racial inequality was a factor.

Is the UK still paying the EU after Brexit? ›

From 31 January to 31 December 2020, the UK was in a transition period, and continued to contribute to the EU as if it were a member until the end of the transition period, reducing the amount of the financial settlement. From December 2020, the payments accrue twice a year.

How long can British citizens stay outside the UK? ›

If you want to leave the UK for a long time

If you stay outside the UK for longer than this you lose your 'right to return' - this means you lose your settled status or your indefinite leave to remain. If you get British citizenship, you can leave the UK for as long as you want without losing your right to return.

Can British citizens still live in Europe after Brexit? ›

The UK is still geographically part of Europe after Brexit, but it is no longer part of the European Union (EU). The 90-day Brexit rule allows British citizens to visit Europe for short trips, but they will need a visa for extended stays.

Why is leaving the EU good for the UK? ›

Leaving the EU has meant that the UK has not had to contribute to the significant new liabilities arising from the EU's Covid response including, for the first time, the EU's borrowing of up to €750 billion between 2021–24.

Why was Brexit controversial? ›

Brexit as a critical juncture? Brexit has been and remains deeply controversial because so much is at stake. Through Brexit, the UK (and to a much lesser extent the EU) have faced questions and debates about identity and unity, political economy and trade, international relations and security.

Why is Switzerland not in the EU? ›

A Swiss referendum held on 6 December 1992 rejected EEA membership. As a consequence, the Swiss Government suspended negotiations for EU accession until further notice.

What happens if a country leaves the EU? ›

If negotiations do not result in a ratified agreement, the withdrawing country leaves without an agreement, and the EU Treaties shall cease to apply to the withdrawing country, without any substitute or transitional arrangements being put in place.

What happens to UK citizens after Brexit? ›

British citizens moving to the EU from 1 January 2021

The automatic right to live and work in the EU ceased after the transition period. British citizens looking to move to an EU country – whether that is to work or to retire – need to apply in accordance with that country's immigration rules.

How does leaving the EU affect UK businesses? ›

New analysis released today (Wednesday 15 March, 2023) by the University of Sussex's UK Trade Policy Observatory (UKTPO), reveals that UK businesses are struggling with increased costs, labour and skill issues and supply shortages and issues following the UK's departure from the European Union.

Does Britain want to rejoin the EU? ›

The president of the European Commission, Ursula von der Leyen, expressed her support for the UK eventually rejoining the EU. In September 2023 Keir Starmer, leader of the Labour Party and the now-Prime Minister of the UK, ruled out the possibility of the UK rejoining the EU under a Starmer-led Labour government.

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