Can you please advise what visas and permits are required to film for one day in Hong Kong?

I am producing a short online film with UK production company ‘PRD' productions. It’s a documentary film about a recent graduate from the ‘INTO’ programme who lives in Hong Kong.

We hope film for only 1 x day in Hong Kong on the 24th April. We would fly in on the 23rd and fly out on the 25th April. Both the cameraman and myself are British Citizens with valid passports.

Thank you in advance.
Anna Bolton