The Royal London Chest Hospital in Bethnal Green has been empty since 2015, waiting for redevelopment. Pretty cool location and looks like it would make a decent, albeit temporary CQB site. I wonder if anyone's already looked into it.
https://www.28dayslater.co.uk/threads/royal-london-chest-hospital-august-2015.98714/
https://www.28dayslater.co.uk/threads/royal-london-chest-hospital-august-2015.98714/