The UK does need to stand up for itself, but there is no reason for it to become confrontational about internal Chinese matters – especially in the case of Hong Kong, where it lost its standing when it agreed to return the city to Chinese control in 1997.
英国确实需要为了自己而站出来，但没有理由要对中国内政说三道四——特别是香港的问题。1997年同意中国收回香港主权后，英国就已经失去了香港问题上的立场。