Sharon Hodgson, Labour's shadow children's minister, said David Cameron had created a "childcare crisis".
She said: "On his watch, we've seen costs spiral, support for families cut back and over 400 children's centres close."
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Barrie died at his home in Uxbridge, west London, after a short battle with cancer.
The first of the 66 trains for the recently-named Elizabeth Line was unveiled at a factory in Derby.
Krysia Osostowicz, 57, had her £200,000 violin snatched on Tuesday night when she was on her way back from a radio performance.