The info from Badminton England has been updated and the latest info can be found on their hub:

https://www.badmintonengland.co.uk/return-to-play/

The latest guidance for players is here:

https://www.badmintonengland.co.uk/media/8900/rtp-player-2.pdf

The latest guidance for clubs is here:

https://www.badmintonengland.co.uk/media/8903/rtp-clubs-2.pdf

There is also a step by step guide for clubs here:

https://www.badmintonengland.co.uk/media/8799/club-step-by-step-guide.pdf

Finally, there is a templated risk assessment document available here:

Risk_Assessment_Guidance_Pack_and_Checklist_-_templated