The UK faces record-breaking May temperatures of up to 33C this bank holiday weekend, with amber heat health alerts issued across central and southern England. Sky's Emma Birchley reports from the start line of an ultramarathon in Richmond, southwest London, where event organisers reveal how they're keeping runners safe on their way to Brighton. Read more: https://news.sky.com/story/weather-latest-temperatures-could-hit-30c-as-bank-holiday-weekend-begins-13546607 #weather #london #uk #skynews 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 Follow us on TikTok: https://www.tiktok.com/@skynews Sky News Daily podcast is available for free here: https://podfollow.com/skynewsdaily/ For more content go to http://news.sky.com and download our apps: Apple https://itunes.apple.com/gb/app/sky-news/id316391924?mt=8 Android https://play.google.com/store/apps/details?id=com.bskyb.skynews.android&hl=en_GB To enquire about licensing Sky News content, you can find more information here: https://news.sky.com/info/library-sales