Well they seem to be looking for BBBB at Scottish Higher level, which would be 260 UCAS points. BBC at A-Level appears to be 280 UCAS points (although the English system is - frankly - stupidly complicated imo).
Source:
Tariff Tables | UCAS | UCAS Tariff Table & UCAS Tariff Points
So I guess anything 280 or above with the required subjects would be considered to meet the minimum requirements.
Edit: the Irish Leaving Cert grades with UCAS points are also shown on the above link. I don't know the Irish system, but it seems like you have plenty of scope to get 280 points with 7 subjects at "Higher" level, but at "Ordinary" level it's impossible (so I'm guessing they are the equivalent of GCSE or Scottish Standard Grades). Hope it helps.
