You would think sites like Github and key government sites would at least have a fall back at the ready. It reasonable to use a CDN like Fastly, but having a single point of failure seems silly if you're the BBC or Gov UK. Although, it does seem BBC managed to get back up and running pretty quick so perhaps they were prepared for this.
Gov.UK is back up too. They have a mandate from government to be able to provide emergency communications so I expect they did have a backup and have managed to switch over, but just took 30 mins to do so.
Gov.UK is supposed to be a bit like BBC 1 or Radio 1 – in a national emergency they can be taken over to disseminate critical information, like if there was a nuclear attack launched on the UK.
