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During the negotiations for the Withdrawal Agreement, much attention was paid to the need to prepare for a no-deal Brexit – where trade with the EU would no longer benefit from all the facilitations made possible by the Single Market, but would be governed by WTO rules only. Both the European Commission and the UK Government issued large numbers of sectoral “preparedness notices” warning participants of the consequences of a no-deal Brexit and insisting on the need for all operators to prepare for this eventuality. Towards the end of the negotiations, there was also a flurry of autonomous “mitigation measures” in particular from the EU endeavouring to mitigate temporarily some of the most disruptive changes where this was judged to be in the interests of the EU. For example, UK airlines were to be allowed to continue to operate flights into and out of the EU for one year, but no flights between EU Member States.
Since the conclusion of the Withdrawal Agreement, attention has turned to the negotiations of the future relationship between the EU and the UK which is to apply from the end of the transition period. However, there is also a risk of the UK exiting the transition period without an agreement on the future relationship. In that case, the consequences will be to some extent the same as for a failure of the negotiations on a Withdrawal Agreement.
In this View from Brussels, we look at these consequences and how they may be addressed.
The EU took the view early on that the Withdrawal Agreement could not provide for the future trading relationship between the parties. Accordingly, while the Withdrawal Agreement maintains the UK in the Single Market during the transition period and contains certain limited “separation provisions” that clarify the status of certain situations that are ongoing at the end of the transition period, the future relationship is only dealt with in the non-binding Political Declaration (except in respect of Northern Ireland). The separation provisions regulate, for example, the fate of legal and administrative proceedings ongoing at the end of the transition period and the continuation of certain outstanding intellectual property rights. As regards trade, the most important separation provision is Article 41 which provides that any goods (except animal and plant products) already on the EU28 market at the end of the transition period can continue to benefit from free movement between the EU27 and UK markets thereafter – so, in particular, no duties will be payable. “Placed on the market” is widely defined and can also cover a contract to buy goods that remain with the seller until long after the end of the transition period. A person seeking to rely on this provision will have the burden of proving his entitlement.
Inconsistently with the EU position that the Withdrawal Agreement could not provide for the future trading relationship between the parties, the Withdrawal Agreement did regulate the future of trade between the EU and Northern Ireland. The objective was to avoid the need for controls on the border between Ireland and Northern Ireland and the effect is, practically, to maintain Northern Ireland within the Single Market. This will lead to multiple legal difficulties as can be seen in this Commission Technical Note.
The EU Commission has been gradually replacing its Brexit preparedness notices with what it now calls “readiness notices”. These are more elaborate than the preparedness notices that they replace and describe not only the consequences of a failure to agree a future relationship with the UK by the end of the transition period, but also certain consequences of withdrawal that will arise whether or not there is an agreement. The readiness notices have a number of common features:
There are a number of entirely new notices such as one on delivery of goods ordered online and organic foods. However, many notices have not yet been issued (judging from the range of preparedness notices that were issued). More are surely to be expected.
One major omission is guidance on customs formalities, duties and tax. There is a readiness notice on the consequences of UK withdrawal for the administration of VAT. However, even more difficult issues may arise for customs and other taxes.
The readiness notices make no mention of possible future autonomous mitigation measures of the kind that were adopted during the negotiations on the Withdrawal Agreement. The situation will be less dramatic than during the Brexit negotiations since the transition period has been used to provide most of the necessary adaptations. One may expect, however, that some autonomous mitigation measures will be adopted on both sides where this is in their interests, if it becomes clear towards the end of the year that there will be no agreement on the future relationship.
The contents of this publication are for reference purposes only and may not be current as at the date of accessing this publication. They do not constitute legal advice and should not be relied upon as such. Specific legal advice about your specific circumstances should always be sought separately before taking any action based on this publication.
© Herbert Smith Freehills 2025
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