David Cameron and Nick Clegg have met with families after pledging up to £1,200 a year in government support for children.
The Prime Minister described the funding as effectively "some tax relief on childcare".
"For many families the cost of childcare is not one issue among many, it is the issue - it really matters," Mr Cameron said.
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A one minute silence has been held at the Queen's Garden Party in memory of the 22 people killed and 59 injured in the Manchester attack.
Mancunians have come together in defiance after a suicide bomber killed 22 people at a concert.
Extra armed police will be deployed to Wembley and Twickenham this weekend, police have confirmed.