To wrap it up I had the following reply from the UK Department of Health:
Dear Mr ……………,
Thank you for your correspondence of 7 February to Wes Streeting regarding Apple AirPods and their hearing aid feature. I have been asked to reply.
On 16 January the Department published guidance on hearing aids in the UK to clarify the regulatory position and set out case studies on the sale of hearing aids to support public access to innovative devices and new technology. The Government aims to make it easier and more convenient for individuals to manage their own health. More information is available at www.gov.uk/government/publications/hearing-aids-in-the-uk/hearing-aids-in-the-uk-policy-statement.
On 24 February, Apple launched the hearing aid feature which is available on AirPods Pro 2 in the United Kingdom. This has medical device regulatory approval and is registered with the Medicines and Healthcare products Regulatory Agency (MHRA). For more information the MHRA contact details can be found at www.gov.uk/government/organisations/medicines-and-healthcare-products-regulatory-agency.
As part of the 10-Year Health Plan, the Department will continue to support the potential of new technologies and innovation, to support the shifts in healthcare from hospital to community, analogue to digital, and sickness to prevention.
I am sorry I cannot be more directly helpful.
Yours sincerely,
Correspondence Officer
Ministerial Correspondence and Public Enquiries
Department of Health and Social Care