Chancellor George Osborne has said the Newark by-election win was a "strong win for the Conservatives" and it was "disastrous" for the Labour Party.
Asked what he thought of the Ukip performance after the anti-EU party came second, he said:
"The Ukip vote was down on where it was a few weeks ago. We have an argument we can take to the country now about the change Britain needs."
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Brain cancer survivor Ashya King has returned to the UK with his parents.
British number one Heather Watson will meet World number one and current Wimbledon champion Serena Williams in the third round today.
A minute's silence will be held across the UK at midday to remember the victims killed in the Tunisia beach attack a week ago.