FOI release
Information on trials conducted on vaccinations available in the UK.
Some or all of the information requested was not provided because we determined that the cost to do so would exceed the appropriate limit.
Case reference FOI2026/00088
Received 28 January 2026
Published 9 March 2026
Request
Please give me details of any vaccinations that have been subjected to a double blind, placebo controlled trial. Please give me a list of all vaccinations available in the UK, and specify which are on the childhood schedule. Please give me a list of all vaccine ingredients. Please give me Patient Information Leaflets for all vaccinations. Please tell me if the ingredients in UK vaccines differ from those in the USA, and tell me where each vaccine is manufactured, and by whom.
Response
See attached
Documents
This is Medicines and Healthcare products Regulatory Agency's response to a freedom of information (FOI) or environmental information regulations (EIR) request.
You can browse our other responses or make a new FOI request.