Hey, i just finished my leaving cert too ! Got offers from loughborough and leicester for computer science, and while im excited about the course, im not sure about the places itself..
You might have noticed that grades in uk are higher than in IE, have you though about the bigger places like ucc or ucd? Their reputations are much higher so you might want to think about that.. Fees are another thing, and this might be a crazy way to think about it, but in the end youll still be in debt, whether 2k a year or 9k.. Plus dublin is hella expensive, so overall costs might not be so distant. Overall it goes down to where you see your future - if you are thinking of living in uk in the future, then its better to set up now, establish yourself, etc. but if you think youll live in ireland anyways, going to uni in ie is a better choice imo. Anyways, good luck to you getting your results, hope you do well !!