
The UK's relationship with the EU has been a contentious issue in British politics for decades, with Euroscepticism growing amid crises such as the Eurozone debt crisis and the 2015 migration crisis. The UK's withdrawal from the EU, or Brexit, took place on 31 January 2020, marking the end of its obligation to follow EU laws. However, the UK remains bound by certain EU laws due to various treaties and agreements, and businesses operating within the EU may need to comply with both UK and EU laws. The UK's departure from the EU has presented significant challenges, particularly in areas like trade, agriculture, financial services, and the environment, which were heavily influenced by EU regulations. The future relationship between the UK and the EU will continue to evolve as new trade agreements are negotiated and implemented.
| Characteristics | Values |
|---|---|
| Number of laws introduced in the UK as a result of EU legislation since 1990 | 52,741 |
| Areas of UK law influenced by the EU | Trade, agriculture, financial services, and the environment |
| Other areas of UK law affected by the EU | Employment and immigration |
| Date of Brexit | 31 January 2020 |
| EU law's primacy over UK laws after Brexit | No |
| UK's obligation to EU laws after Brexit | Bound by obligations in treaties with EU member states and the EU itself |
| New trade agreement between the EU and UK | Could result in a 4% reduction in British productivity |
| EU-UK Trade and Cooperation Agreement (TCA) | Provides for zero tariffs and zero quotas on all trade of EU and UK goods that comply with the appropriate rules of origin |
| Customs procedures | Applicable to trade between the UK and the EU |
| EU customs rules and procedures for Northern Ireland | Continue to apply |
| Online shopping from the UK | Same charges as goods bought online from non-EU retailers apply |
| EU laws still applicable in the UK | General Data Protection Regulation (GDPR) |
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What You'll Learn

EU laws in the UK since 1990
Since 1990, a total of 52,741 laws have been introduced in the UK as a result of EU legislation. These laws have influenced a wide range of areas, including trade, agriculture, financial services, and the environment. The UK's relationship with the EU has evolved significantly during this period, with the country joining the European Community in 1973 and becoming a member of the EU in 1993.
In the 1990s, two important treaties were signed: the Treaty on European Union (Maastricht Treaty) in 1993 and the Treaty of Amsterdam in 1999. The Maastricht Treaty was a major milestone, setting clear rules for the future single currency, foreign and security policy, and closer cooperation in justice and home affairs. The Treaty of Amsterdam built on these achievements, aiming to reform EU institutions, strengthen Europe's global voice, and devote more resources to employment and citizen rights.
During this time, the EU also established the single market and the "4 freedoms": the free movement of people, goods, services, and money. This was extended to countries in the European Free Trade Agreement (EFTA) through the European Economic Area (EEA) agreement, creating a market of 30 countries.
After the UK voted to leave the EU in 2016, the government faced the challenge of disentangling EU laws from UK law. The European Union (Withdrawal) Act 2018 provided a framework for this process, with thousands of amendments made to ensure continuity in areas previously governed by EU law. Some EU laws were revoked entirely, while new post-Brexit regimes were established in areas such as agriculture and subsidy control.
Even after Brexit, the UK's relationship with EU laws remains complex. Some EU-based case law from before Brexit is still binding on UK lower courts, and the UK may need to adhere to certain EU laws to maintain trade agreements. As of 2025, the UK government has identified 6,901 individual pieces of retained EU law, now referred to as "assimilated law."
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The UK's withdrawal from the EU
The United Kingdom's withdrawal from the European Union, or Brexit, is a complex process with significant implications for the UK's future. On June 23, 2016, a national referendum resulted in the UK announcing its intention to leave the EU, marking a pivotal shift in national policy. The UK formally notified the European Council of its decision on March 29, 2017, and negotiations for an "orderly Brexit" commenced on June 19, 2017.
The negotiations between the EU and the UK spanned from 2017 to 2019 and centred on a withdrawal agreement, encompassing a transition period to ease the impact of changes on citizens and businesses, as well as outlining future relationship objectives. The European Communities Act 1972, which enshrined the UK's membership in the EU, was set to be repealed upon the UK's departure.
The EU-UK withdrawal agreement, signed and ratified by both parties, came into force on February 1, 2020, setting the terms for the UK's withdrawal as per Article 50 of the Treaty of the European Union. The agreement included the Protocol on Ireland/Northern Ireland, ensuring no hard border on the island of Ireland and safeguarding the Good Friday (Belfast) Agreement.
Additionally, the UK's departure from the EU has resulted in changes to customs and taxation procedures. Customs declarations and additional formalities are now required for importing and exporting goods to and from Great Britain, and different VAT rules apply for transactions involving the country. The EU-UK Trade and Cooperation Agreement (TCA) came into force provisionally on May 1, 2021, providing for zero tariffs and quotas on compliant goods.
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The UK's future relationship with the EU
The UK's relationship with the EU has been a topic of much discussion and debate in recent years, particularly following the UK's withdrawal from the EU, known as Brexit, which officially took place on 31 January 2020. This marked a significant shift in the dynamic between the UK and the EU, and there are several implications for their future relationship.
One of the key aspects of the UK's future relationship with the EU is the impact on UK law. Since the UK joined the European Communities (EC) in 1973, EU law has influenced a wide range of areas of UK law, including trade, agriculture, financial services, and the environment. Following Brexit, the UK government is faced with the task of reviewing and deciding on the fate of these EU-derived laws, whether to keep, amend or repeal them. This process will undoubtedly shape the future relationship between the UK and the EU, as the UK negotiates its new position outside of the EU's legal framework.
The future relationship will also be influenced by the terms of the EU-UK Trade and Cooperation Agreement (TCA), which came into force provisionally on 1 May 2021. The TCA provides for zero tariffs and zero quotas on trade between the EU and UK goods complying with the appropriate rules of origin. However, customs procedures and formalities now apply to trade between the two entities, treating the UK as any other non-EU country. This marks a significant change, as businesses operating with the EU will need to navigate these new customs procedures, potentially impacting the flow of goods and services.
Another important consideration is the impact on data protection and privacy. With the UK's departure from the EU, it is no longer subject to the European Economic Area General Data Protection Regulation (EEA GDPR). Instead, it has its own United Kingdom General Data Protection Regulation (UK GDPR), which provides individuals with rights relating to their personal data. This change in data protection landscape will shape how data is shared and processed between the UK and the EU, with potential implications for businesses and individuals alike.
In conclusion, the UK's future relationship with the EU will be shaped by several factors, including the evolution of UK law post-Brexit, the terms of trade and cooperation agreements, changes in data protection regulations, and the underlying reasons for Brexit. The dynamic between the UK and the EU is likely to continue evolving as they navigate their new relationship, with potential implications for businesses, individuals, and the broader global landscape.
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The influence of EU regulation on UK law
Since the UK joined the European Communities (EC) in 1973, EU regulation has influenced a wide range of areas of UK law. According to the Legal Business of Thomson Reuters, a total of 52,741 laws have been introduced in the UK as a result of EU legislation since 1990. The areas of UK law most influenced by the EU include trade, agriculture, financial services, and the environment. Other areas, including employment and immigration, have also been affected.
The UK's membership of the EU was enshrined in UK law by the European Communities Act 1972. Following the EU referendum vote on 23 June 2016, the UK government has been working to overhaul the EU's influence over UK law. The Prime Minister at the time of the referendum stated that the European Communities Act 1972 would be repealed once the UK formally left the EU. This occurred at 23:00 GMT on 31 January 2020, when the UK officially left the EU.
During the transition period, which ended on 31 December 2020, the UK remained subject to EU law and was part of the European Union Customs Union and the European single market. The UK and EU negotiated their future relationship during this time, reaching an agreement on the terms of their new relationship, including a Trade and Cooperation Agreement (TCA) that provides for zero tariffs and zero quotas on all trade of EU and UK goods that comply with the appropriate rules of origin.
Despite the UK's departure from the EU, EU law-derived provisions will remain in UK law until reviewed and decisions are made as to whether to keep, amend, or repeal them. The extent of the continued application of EU law in the UK will depend on the nature of the UK’s negotiations with the EU. It is likely that businesses operating within the EU will need to operate under both UK and EU Law. New trade agreements formed between the UK and the EU may require the UK’s ongoing adherence to relevant EU laws, despite it no longer being an EU member state.
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The impact of Brexit on trade between the UK and the EU
The UK's exit from the EU, or Brexit, has had a significant impact on trade between the two entities. The UK officially left the EU on January 31, 2020, but remained inside the EU single market and customs union for another 11 months to facilitate trade.
One of the immediate consequences of Brexit was the introduction of customs declarations and formalities for goods moving between the UK and the EU. This included the need to provide security and safety data, comply with specific rules for certain goods, and adhere to different VAT rules and procedures. These changes disrupted the flow of trade and created additional costs and complexities for businesses.
Brexit has also led to a decline in trade between the UK and the EU. Studies have shown a sharp decline in trade from the UK to the EU and smaller reductions in trade from the EU to the UK. Small UK firms have been particularly affected, struggling to cope with the new post-Brexit cross-border bureaucracy. The UK's services exports, such as advertising and management consulting, have performed well since 2021, but overall, the Office for Budget Responsibility (OBR) predicts a 15% long-term reduction in exports and imports of goods and services relative to a non-Brexit scenario.
To mitigate the impact of Brexit on trade, the UK has pursued new trade deals with countries outside the EU, such as Australia and New Zealand. However, the negative impact on UK-EU trade is expected to outweigh the benefits of these new agreements. Additionally, the UK incorporated thousands of EU laws into its own legislation, known as "retained EU law," to minimize immediate disruptions after Brexit. Over time, the UK plans to review and decide whether to keep, amend, or repeal these laws.
In summary, Brexit has had a significant impact on trade between the UK and the EU, leading to new trade complexities, a decline in trade, and efforts by the UK to adapt and pursue new trade opportunities. The full effects of Brexit on trade are still unfolding, and it may take several years to realize the full extent of the impact.
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Frequently asked questions
No. The UK left the EU on 31 January 2020, and during a transition period that ended on 31 December 2020, the UK and EU negotiated their future relationship. The EU and the UK reached an agreement on the terms of their relationship, and the EU-UK Trade and Cooperation Agreement (TCA) came into force on 1 May 2021. This agreement provides for zero tariffs and zero quotas on trade for goods that comply with the appropriate rules of origin. The UK is now treated as a non-EU country for customs purposes.
Yes. Since the UK joined the European Communities (EC) in 1973, EU law has influenced a wide range of areas of UK law, including trade, agriculture, financial services, and the environment. A total of 52,741 laws were introduced in the UK as a result of EU legislation from 1990 to 2017.
The UK's membership in the EU contributed to Euroscepticism in the country. Critics argued that policies during the eurozone debt crisis and the 2015 migration crisis disproportionately served the interests of leading EU nations and undermined national sovereignty. The UK's withdrawal from the EU, or Brexit, was advocated by mostly right-wing and conservative hard Eurosceptics.







































