But the UK’s muscle in the EU’s capital has been “downgraded” from the most senior civil service level, it warns – after the post of ambassador was replaced with a “head of mission”.
There are already fewer staff in Brussels (65) than in Paris (110) or Berlin (75) – even before a likely brain-drain, as “relations with the EU plummet down the list of political priorities”.
The report, by the UK in a Changing Europe think tank, raises the alarm over what it says is a failure to recognise that the EU will continue to “loom large” over the UK’s post-Brexit world.
“There is a palpable risk that the UK mission will struggle to attract talented civil servants in future,” author Matt Bevington warns.
“One of the most attractive features of working in UKRep – being directly involved in negotiations on legislation – no longer exists.”
Highlighting a “knowledge” gap, with it no longer being possible to gather intelligence and lobby for UK interests, Mr Bevington adds: “Without a concerted effort to bolster recruitment, the UK mission could come to be regarded as a career graveyard.
“There is an expectation that it will gradually reduce in size over time due to natural wastage as officials move on.”
Even the ratification of the deal has been plunged into doubt, with the EU launching legal action over the UK’s alleged breach of the Northern Ireland Protocol.
Released to The Independent, the report, which was compiled after conversations with British former officials in Brussels, concludes that the UK’s failure to punch its weight has been a longstanding weakness.
There has been a “fixation” on member state leaders meeting in the European Council and a “failure to recognise the growing importance of the parliament”, it says.
As a partial solution, the report urges political parties and senior MPs to rescue links with counterparts across the Channel.
“The UK has left the EU, but a close and important relationship between the two is inevitable and needs to be maintained,” the study concludes.
“Discussions will continue across a whole range of issues, from fisheries to police cooperation, to customs and social security.
“Managing this morass of committees, review dates and discussions requires some form of central coordination within the UK government. It will require the mobilisation of all the UK’s EU expertise.”