Education minister Liz Truss has called for a shift in attitude towards seeing childcare as a profession that requires training.
She said: "It is a very demanding job that requires great and specialist expertise. I am not trained to do the job. I'm a politician, not an early educator. And I'm equally sure I could not walk into a class of 30 14-year-olds and teach them German."
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Mayor of London Sadiq Khan is backing the scheme.
Sunday will be a fine day across much of Scotland and northern England, with much less coastal mist and low cloud than yesterday.
A spokesperson said the lightning strikes had left the "aircraft fuelling system unavailable."