As you know, UK stock of PKM's is non-existent. A&K parts a hard to get hold of at the best of times. (I've got their M60)
I don't know if they're still making PKM's but the current Covid situation in China means they're working at low production level, if at all.
Even if the company survives and continues production in the future it'll take quite a while for items to appear in UK retailers.