Slightly different as that became a national fact in being, against which it was literally impossible to do anything about. That's not the same as coercing a shopkeeper to display goods in metric weights, on pain of prosecution for default, when there was a traditional, established and perfectly viable system already in place, which the customers of private traders were not complaining about, and arguably most preferred.
Sorry but the mantra of "you've got to this because we say so, and woe betide you if you don't", when there is no reasonable case for having to do so, goes right against the grain with me, and also many others. As far as I know, no legitimate and convincing arguments were ever put forward, propounding the positives of abruptly switching to metric and ditching imperial, merely "it's now the law", being enforced by some goon from the council.