A hot air balloon flies over London, Britain, June 9, 2019.
Hot air balloons take off from Battersea Park in London, Britain, June 9, 2019.
Hot air balloons fly over London as a part of the Lord Mayor's Hot Air Balloon Regatta, in London, Britain June 9, 2019. REUTERS/Simon Dawson - RC18E055B2E0
A hot air balloon flies over Greenwich Maritime Museum during the Lord Mayor's Hot Air Balloon Regatta, in London, Britain June 9, 2019.
Hot air balloons fly over London as a part of the Lord Mayor's Hot Air Balloon Regatta, in London, Britain June 9, 2019.
Hot air balloons fly over London as a part of the Lord Mayor's Hot Air Balloon Regatta, in London, Britain June 9, 2019.
A hot air balloon flies over a gas holder during the Lord Mayor's Hot Air Balloon Regatta, in London, Britain June 9, 2019.
Hot air balloon come to land at Birchmere Park in London, Britain, June 9, 2019. REUTERS/Simon Dawson - RC1972F35D20
Hot air balloons fly over London as a part of the Lord Mayor's Hot Air Balloon Regatta, in London, Britain June 9, 2019.
Balloons fly over London, Britain, June 9, 2019.
Sun rises over the city of London, as seen from a hot air ballon, Britain, June 9, 2019. REUTERS/Simon Dawson - RC1707152460
Hot air balloons fly over London as a part of the Lord Mayor's Hot Air Balloon Regatta, in London, Britain June 9, 2019. REUTERS/Simon Dawson - RC1D22BDE0B0
Hot air balloons fly over Canary Wharf during the Lord Mayor's Hot Air Balloon Regatta, in London, Britain June 9, 2019.
Hot air balloon come to land at Birchmere Park in London, Britain, June 9, 2019. REUTERS/Simon Dawson - RC1972F35D20
Hot air balloons prepare ahead of take off at Battersea Park in London, Britain, June 9, 2019.
Hot air balloons take off at Battersea Park in London, Britain, June 9, 2019. Image used for illustrative purpose.
A hot air balloon flies over a gas holder during the Lord Mayor's Hot Air Balloon Regatta, in London, Britain June 9, 2019. REUTERS/Simon Dawson - RC18361BEF40
Hot air balloons fly over London as a part of the Lord Mayor's Hot Air Balloon Regatta, London, Britain June 9, 2019 in this image obtained from social media. Harry Roth/via REUTERS
Hot air balloons fly over London as a part of the Lord Mayor's Hot Air Balloon Regatta, in London, Britain June 9, 2019.
Hot air balloon come to land at Birchmere Park in London, Britain, June 9, 2019.
Hot air balloons fly over London as a part of the Lord Mayor's Hot Air Balloon Regatta, in London, Britain June 9, 2019.
A hot air balloon flies over London, Britain, June 9, 2019.
Balloons fly over London, Britain, June 9, 2019.
Sun rises over the city of London, as seen from a hot air ballon, Britain, June 9, 2019.
Hot air balloons prepare ahead of take off at Battersea Park in London, Britain, June 9, 2019.
Balloons fly over London, Britain, June 9, 2019.
Hot air balloons fly over the Canary Wharf district during the Lord Mayor's Hot Air Balloon Regatta, in London, Britain June 9, 2019.
Battersea Power Station stands under development, in London, Britain June 9, 2019.
Balloons over London