Switching now would be out of the question even for Sweden who isn't perpetually doing the opposite of everyone else. With modern infrastructure it's simply too

Switching now would be out of the question even for Sweden who isn't perpetually doing the opposite of everyone else. With modern infrastructure it's simply too expensive. In the 50s and 60s it was doable. My question wasn't whether the UK would ever do it (now) but whether they did or should have considered it in the early 60s. Not sure what I feel about the speed limits. Being part metric and part imperial seems like the worst of both worlds tbh. The pint is fine. You aren't going to do a lot of math with the pint. Worst case you'll wonder how many pints to a 50L keg). But mph is just terrible. I mean just do km/h when everything else is metric in terms of distance! Also, do L/100km not mpg (or km/L). The volume-per-distance is the one that composes mathematically e.g. in averages.