According to this answer, Antigua and Barbuda (I'll call this AB for short) supported China's National Security Law that the U.K. excoriates. AB is a Commonwealth Realm, but I know Commonwealth Realms are sovereign states. But the U.K. can still use its constitutional and legal roles to influence AB. UK can theoretically exercise its Crown Prorogative or refuse Royal Assent against AB's intentions, even if "The last bill that was refused assent by the Sovereign was the Scottish Militia Bill during Queen Anne's reign in 1708."
Thus why hasn't UK reprehended or punished AB? For instance, can't UK disconnect from AB, or have Queen Elizabeth II stop being AB's head of state? Can't UK impose sanctions on AB?
How can AB remain a Commonwealth Realm? Because China dislikes the UK, wouldn't China ask AB to leave Commonwealth?
I don't expect AB to reprehend the U.K. for excoriating China's laws, when UK has more capital and power than AB.