Public Health England have said there was a small increase in reports of heat related illness from Monday 8 July to Sunday 14 July, in line with the recent warm weather.
The conditions ranged from heat/sun stroke, sunburn, dehydration or exhaustion.
The increases were predominantly noted across the East of England, South West and South East Coast regions of England, and were reported across all age groups.
The finding was based from data on GP consultations (in hours and out of hours), NHS helpline calls and A&E attendances to monitor the effects of the heatwave on people's health.
The Met Office has elevated the West Midlands from level 2 to level 3 on its heatwave weather warnings scale. The East Midlands and Yorkshire remain at level 2.
The Met Office says heatwaves can be dangerous, especially for the very young, very old or those with chronic diseases.
If you want more information about hot weather and your health please visit www.nhs.uk.
If you are concerned about your health or somebody you care for, please contact NHS Direct on 0845 4647,www.nhsdirect.nhs.uk or your local pharmacist.
As emergency and social services prepare for the heat there are things you can do to stay cool and enjoy the weather safely.Read the full story ›
The Met Office has confirmed that today is the hottest day of the year with temperatures exceeding 30C.