Hi folks,
I've been looking at this site lately,
Make and browse Freedom of Information (FOI) requests, which gathers UK government dept FoI responses, including those directed to the MoD and RAF.
These contain some redacted manuals on modern(ish!) UK military types.
Click the menu at the top (3 horizontal bars on my phone) to open the search.
I have searched, for example, Tucano manual.
Then filter by "requests"
Then filter by "successful requests"
Then arrange by newest results first.
There are a few duds in there but some gems too.
There's also AP 3456, a multi-volume RAF pilot theory training publication, volumes below.
Cheers.