Where to buy Union Jack Converse in the UK?

I have seen Union Jack converse on sale on American websites and stores, but i can’t find a pair for sale anywhere in the UK. I mean they are Union Jack converse after all, they should at least be on sale in the country they have the flag of on them. Does anyone know anywhere i can get a pair of these converse (preferably not ebay or similar) in the UK? I’ll even accept an american website that ships internationally, but i can’t find one.