Would agree with Hum on this one, and also thought it was unusual for an airliner to be @ 1500' QNH with 10 nm to run.
Is there a panhandle at Waterford? If so, was the alleged airprox within same. from memory, there isn't, but if there is, this would fall into Shannon CTR to 2500'.
From my trips to EIWF, SNN will always give handover well before the EIWF CTZ, usually about 20 nm out,and EIWF ATC has always been very good at routing VFR traffic out of the way.
Presume we can expect suitably understated headline in the Mail in next few days of near catastrophe, and "Think of the Children" panic!
One for GASCI?