My usual suggestions are those two:
https://reasons.to (both the London and especially the Brighton event)
https://beyondtellerrand.com/events/duesseldorf-2018
https://fosdem.org/2018/ in Brüssel, Belgium (for free)
CCC this December in Leipzig
My usual suggestions are those two:
https://reasons.to (both the London and especially the Brighton event)
https://beyondtellerrand.com/events/duesseldorf-2018