The UK government published information on 22nd February 2021 outlining its roadmap out of lockdown.
If this goes according to plan, on 29th March, outdoor sports facilities, such as tennis and basketball courts, will be allowed to reopen, and people can take part in formally organised outdoor sports. (Para 102 of the government guidance).
Diving professionals running diver training activities can consider themselves to fall under the category of “formally organised outdoor sports”, and in this sense, they are a business activity.
Based on previously issued government guidance, adults can take part in outdoor organised sport and licensed physical outdoor activity in groups of more than six, provided it is organised by a national governing body, club, registered instructor/coach, business or charity; and/or involve someone who has received an official license to use equipment relevant to the activity. In all cases, the organiser must conduct a risk assessment and ensure compliance with COVID-19 Secure guidance or risk getting a fine.
More detailed advice concerning organised diving events has been produced by the National Governing Body.