You may be already watching the series of Lockdown Lectures fronted by Paul Beaver but, if not, the latest lecture, and last in the current series, is being aired on the 21st September. If you can't watch it live then you can watch it 24 hours or so later as an archive recording - along with all of the previous ones this year. The lecture is probably about 15 to 20 minutes long with a Q & A session taking it typically up to an hour overall straight afterwards. The lecture tomorrow is about British Army flying in WWI so there's bound to be something of interest!
https://www.armyflying.com/lockdown-lectures/
