It was a bet that voters were fed up with years of Brexit drama and wanted the government to cut a deal and finally get out of the EU. With a healthy majority, Mr Johnson was able to sideline the Democratic Unionist Party (DUP) and do the deal which effectively left Northern Ireland inside the EU's single market for goods. For most voters in Britain, that may have been enough for them to accept that Brexit was largely finished with. But in Northern Ireland the sea border continued to dominate politics, ultimately leading to the collapse of devolution. With the Windsor Framework - and a subsequent side-deal with the DUP - leading to the restoration of devolved government, there is perhaps an argument that Brexit is now "done" in Northern Ireland too. However events this week show that is a difficult argument to sustain. Northern Ireland, the single market and Brexit Firstly, a House of Lords committee highlighted the significant unfinished business of veterinary medicines. Medicines have been one of the most difficult post-Brexit trade issues in Northern Ireland. That is because Northern Ireland has remained in the EU's single market for medicines, despite getting most of its medicines from distributors and manufacturers in Great Britain. Under the terms of the original deal, the Northern Ireland Protocol, medicines being sent from Great Britain to NI would have required retesting and relabelling to ensure they met EU standards.