British officials botched the translation of Theresa May’s discredited White Paper into European languages, part of a UK strategy to win concessions from Brussels, and failed to translate the document into Irish, despite being locked in fraught Brexit talks over Ireland’s border.

The paper’s executive summary, which Britain hopes to use to help solve the vexed border issue, has been translated, poorly, into 22 languages. The full 100-page document has only been translated into one other language, Welsh, which, unlike Irish, is not an official EU language.

After The Telegraph contacted the British Government, an Irish version was published on Thursday afternoon, two days after the other translations but the damage was already done. A DexEU spokeswoman said the translations were being published as they were finished.

Basic errors and amateurish negligence has not only wasted an opportunity to win hearts and minds on the Continent but will confirm Brussels’ worst suspicions about the government. It exposes, once again, how poorly the Department for Exiting the European Union understands Brussels, its priorities and its culture.

When Donald Tusk, the president of the European Council, travelled to Dublin he made a point of addressing reporters in Irish. The gesture was appreciated in Dublin and left some in tears. The EU-27 governments have made it clear they will back Ireland to the hilt with senior figures insisting “we are all Irish”.