FOI reference: FOI-2024-2273

You asked

I would like to make an FOI request for the number of attendees at Porton Down since 1915.

If possible I would like the total number of volunteers to Porton Down, with a separate statistic for those who were exposed to a chemical or biological agent or one of the treatments and/or antidotes for said agents.

We said

Thank you for your request. 

We do not hold any information on the attendees or volunteers of Porton Down. Your query may be best directed to The Ministry of Defence on cio-foi@mod.gov.uk.

We also do not hold any diagnosis or treatment data, so are unable to provide you with the number of people who have been exposed to chemical or biological agents. This question my be best answered by NHS England on england.contactus@nhs.net.