Bon Jovi said they are looking forward to performing at Hyde Park as part of the Barclaycard British Summertime Festival which starts at the end of June. They added they were not concerned about noise restrictions or the British weather which caused problems at festivals last year.
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Before the final declaration on Friday, the Conservative candidate looked set to lose the City Hall race to Labour's Sadiq Khan.
The Tooting MP has been the frontrunner in the counting process ahead of Tory challenger Zac Goldsmith.
It's not just London where elections have been taking place today. There were council elections taking place across the home counties.