Heathrow Closure

I also wondered that Andy - but the lack of ability to accept inbound flights makes me wonder what would could possibly have failed to prevent flights from landing.  I would have anticipated back-up generators as part of the airport's infrastructure and completely independant from the DNO supply.  I can think of lots of examples of less important sites in the UK that have onsite power generation independant of the national grid. 

Technically they could still accept flights as a lot of the kit in the apron runway area have back up and such the issue is they do not have backup and contingency power in the main buildings so they can not deal with the people in the terminal buildings. Poor Planning (PPP) or lack of contingency?

The other thing that people are NOT discussing is the possibility of sabotage from the the USSR.  Someone may have asked for a large spanner to be Putin the works, so to speak.

Technically they could still accept flights as a lot of the kit in the apron runway area have back up and such the issue is they do not have backup and contingency power in the main buildings so they can not deal with the people in the terminal buildings. Poor Planning (PPP) or lack of contingency?

The other thing that people are NOT discussing is the possibility of sabotage from the the USSR.  Someone may have asked for a large spanner to be Putin the works, so to speak.