"Keyworker" status here was decided by the council.

Pretty much all of the council staff got their kids and friends kids designated as key worker children to go to school.

The system around here was entirely corrupt.

If I recall correctly, you reporting from the glorious People's Democratic Republic of Wales?

Please don't spread it around but my daughter is in a London borough with a high case rate and appealed for our six year old grandson to be let in as two of them have high powered jobs working from home though neither could by any stretch of imagination be described as key workers. They were successful. Turns out there are only three kids in the class. Clearly there's a lot of discretion and much might depend on the decency of the head and the level of demand.
On the other hand my wife and I are trying to support a young mum up the road with three primary age kids and husband forced to work away from home to make ends meet. The stress on her is awful. The mean spiritedness of the school closures is to me one of the great iniquities of the current lockdown but sadly the public and many parents seem to support it.