The Aviation and Aerospace Initiative have released a guide to the archives of UK Aircraft manufacturing. The guide covers UK-based businesses for which archives survive that have at some point manufactured aircraft capable of carrying people. It also covers trade and professional bodies, past and present, which represented the interests of aircraft manufacturers and their employees or which supported aeronautical research.
The first version of the guide, published in January 2021 by the Aviation and Aerospace Archives Initiative (AAAI), contains over 90 entries relating, for the most part, to material which was signposted on archive search engines.
You can visit the guide here.
For more information on how to contribute to the survey see here.