A man has died after falling into the River Tawe in South Wales as three major incidents have been declared.
A multi-agency response has been triggered as rescuers battle to get to victims by helicopter and boat.
Major incidents have also been declared in Hereford and Worcester.
Storm Dennis has also meant the Environment Agency declared the highest number of flood warnings and alerts on a single day in England.
SUBSCRIBE to our YouTube channel for more videos: http://www.youtube.com/skynews
Follow us on Twitter: https://twitter.com/skynews
Like us on Facebook: https://www.facebook.com/skynews
Follow us on Instagram: https://www.instagram.com/skynews
For more content go to http://news.sky.com and download our apps:
Sky News videos are now available in Spanish here/Los video de Sky News están disponibles en español aquí: https://www.youtube.com/skynewsespanol