
https://www.nuffieldtrust.org.uk/news-item/privatisation-by-the-front-door-what-does-a-new-public-private-gp-model-mean

http://openeurope.org.uk/today/blog/will-brexit-ground-flights-europe/

https://www.sipri.org/sites/default/files/2026-03/fs_2603_at_2025.pdf