evidence: Northern Ireland-Ireland exports ‘worth €5bn in 10 months' [...] They show that Ireland is overwhelmingly Northern Ireland's single biggest export market: exports to the rest of the EU were worth €3.6bn in the same period while exports to the rest of the world were worth £1.1bn. [...] Since the Northern Ireland Protocol began operating in January 2020 it has become more difficult for businesses in either part of Ireland to import goods from Great Britain.