Especially when they specified a radius in km(!).
Although road-signs are all in miles, it's not unknown for other distance markers (e.g. on walking / cycling trails) to be in kilometres. When I was studying in Birmingham in 2006-2010 the signs on the canal network were in kilometres.
For me, my default unit is kilometeres (although I am one of those awful Bremoaners [https://en.wiktionary.org/wiki/Bremoaner] who even moved to Berlin after the vote).
Same for booze. It's illegal to sell most booze in imperial units (e.g. a shot of whiskey must be either 25ml or 35ml, no other values, and the choice between 25ml and 35ml shot size is for an entire bar, they can't be like house vodka is 35ml but this expensive Scotch is 25ml), but, it's mandatory to sell beer and cider by the pint.
It's a temporary fudge that then politicians are reluctant to actually follow through and do the clean-up later because that's only going to annoy the handful of strong opponents and makes little real difference to ordinary punters for whom this isn't a priority.
Sometimes this works out OK in politics, e.g. in Britain it was never strictly made illegal to sell leaded fuel only new cars which need such fuel - but it soon made no economic sense to make such fuel as a fuel refinery, so the ban was unnecessary. Politicians could go from telling the niche of pro-lead constituents they'll still be able to buy the fuel they want to commiserating them that it's no longer for sale, never having actually banned it.
Is it? Is it not 568ml of beer? I.e. not sold as an imperial pint measure, but as 568ml?
Of course everyone calls it a pint of this or the other, but I think on all the glasses etc the measures are in ml not imperial pints? It's been a while since I've been to a pub (before COVID) so I guess this might have been rolled back after Brexit?
The only place a pint is legal is draught beer and cider, which are poured into glasses and the glasses are marked either with a line or "to the brim", with either a crown mark or a CE label signifying the maker claims these glasses comply with regulations.
The people making a "beer glass" and putting the crown mark on it need to ensure it conforms, if they've got gear that can tell them it's 568.26125ml that'd work, because that's what a pint is, but the law says "Pint", not "568.26125ml".