I agree with ryaner. Nobody can predict what way Standard Variable Rates are going to go because it's in the hands of a small number of individuals who run Bank of Ireland. Unless you can tell what decisions these men and women are going to make in the future, they cannot be predicted.
If it's something that's likely to be a cause of worry to you, pick a fixed rate - not because it might save you money against the variable rate. As said, that cannot be predicted in advance. But because you will be buying certainty for yourself. Maybe you'll end up paying a price for that certainty. Maybe you won't.