Effective 8 Mar 2021, you must complete a declaration form for international travel to declare the reason that you need to travel abroad. Please refer to the UK government guidanceOpen a new window for more details.
If you are travelling from the UK to Hong Kong, you must have a negative COVID-19 nucleic acid test report within 72 hours of your flight and received a negative result prior to departure. If you don't have the correct test you will not be permitted to travel.
You will also need to provide accreditation documentsOpen a new window to the border authorities, including Certification of Accreditation or Certificate of Compliance that the laboratory is approved in the UK.