Yup, they're identical. Only difference you might find is that promotional offers on the packs are occasionally localised for Ireland or the UK. E.g. P&G products were sold here with a "Eurosmart pack" discount.
We do use different currencies ( € Euro in Ireland, £ Pound Sterling in the UK)
And we don't share a common telephone system. So, toll free in Ireland is 1-800 xxx xxx and in the UK is 0800 xxx xxxx. However, recently many companies that operate across Europe are using the "European Freefone" 00-800-XXXX XXXX numbers which work right across the European Union.
All of that means that the packs either have to carry information for both the UK and Ireland (Which most do) or else, they have to be slightly different packs for each market.
Grocery products of that type are generally identical though in both countries and TV ads are also identical although oddly enough, some would be dubbed into Irish accents here.
Uprights are still very unpopular. They used to be quite common in the 1970s when wall-to-wall fitted heavy carpets were all the rage. There are far more hardwood floors thesedays. Also, the advent of very powerful canesters really consigned the uprights to a niche market. A powerful canester is just far more flexible and less complicated. Dyson hasn't really had a huge impact on that as the cylinder versions are probabally more popular than the uprights. The bias towards cylinder/canester vacuums has, if anything, increased as hardwood floors are becoming far more common place.
For some reason, Nilfisk (Danish Company) used to very much dominate the vacuum cleaner market here with their iconic canester vacuums. They were very much the dysons of the 1970s and 80s and lasted decades. (my grandmother's 1960s Nilfisk is still goig strong without ANY repairs and daily use)
I suspect that uprights remain popular in the US and Canada because your 110V 15A outlets can only provide about 1600W of power absolute max and most appliances have to be kept quite a bit below that upper limit. Using a beater brush/beater bar to sweep the floors usually means you can have a less powerful suction motor.
European 230V 13A (UK/Ireland) and 16A (everywhere else in EU) gives you at least 3000W of power from a normal outlet. It tends to mean we've more powerful portable appliances. So, a 1800W or even 2000W canester vacuum is quite doable.
