Enterprise Ireland (EI) has long established itself as a crucial part of the country’s growing tech sector. The agency is Europe’s most active venture capitalist by deal flow, and through a mix of schemes and grants, it has become a rite of passage for start-up founders. Now, it wants to ramp up its investments into later-stage firms and, in the process, address an issue that has blighted the European start-up ecosystem: scale-up funding. EI led a delegation, which included financial services minister Robert Troy, to the London Stock Exchange on Thursday to celebrate “Ireland Day”. The minister kicked off trading…