The SW is currently at a Level 2 Heat Health Alert – ‘Alert and Readiness’.
New resources and a slide pack outlining the risks of COVID-19 and hot weather are available on the Heatwave Plan for England collection page.
The latest alerts can be found on the Met Office website – https://www.metoffice.gov.uk/public/weather/heat-health/#?tab=heatHealth
Here is a link to a blog PHE wrote on hot weather in 2018 which might be useful too - https://publichealthmatters.blog.gov.uk/2018/07/23/why-some-people-suffer-during-heatwaves/