"Bank of Ireland is also increasing its five-year and 10-year fixed rates, a move that reflects the fact that it expects European Central Bank rates to start moving up in the next year or so."
There is absolutely no connection to ECB rates.
All banks hedge their fixed rates in the market. It is cheaper today than a year ago to hedge 5 and 10 year rates.
I've said before. The only driver of interest rate changes in the past few years is competition. After the rate increase, it's still the cheapest 10 year rate, even without factoring cashback.