What would the situation be with Halifax.ie and First Active in the event of an Irish default, given they have UK links?
First Active no longer exist. They are now branded as Ulster Bank who are owned by RBOS.
Your money is safe unless Lyolds Banking Group/RBOS also goes to the wall.
It is possible that if Ireland defaults, which I think is unlikely, that Lyolds Banking Group/RBOS would not also go to the wall as they are largely owned by the UK govt. Hence, deposits with these banks would not be impacted in this situation.