So, help me understand...

If the British Pound Sterling is closer to one to one exchange with the US dollar (that's better for me, I understand that) but how does that compare to the Euro in use in Ireland?

If those ratios become more favorable to "me" is there sense in buying now (or if it drops more) and keeping the money until such time as we return to Ireland and visit the UK?

Or does one not do that; buy foreign currency and save it for a later date?