David Cameron hopes the Fostering For Adoption scheme will give children a better start in life by ensuring they have a stable home as quickly as possible.
Cameron said: "I'm determined that we act now to give these children the very best start in life.
"These babies deserve what every child deserves: a permanent, secure and happy home environment to grow up in."
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A band of heavy and persistent rain will affect the west and southwest from dawn, with the risk of thunder and coastal gales.
At least two people have died and more than 120 others have been injured after an earthquake rocked Turkey and the Greek island of Kos.
The son Cecil the lion, whose 2015 killing prompted an international outcry, has also been fatally shot during a hunt.