The record set in the summer of 1976 has been broken as climate change drives more intense heatwaves.
Temperatures are expected to peak at 37C on Wednesday and 38C on Thursday and Friday.
Wednesday and Thursday’s red warning has been extended to cover the south coast, with new amber warnings issued for Friday and Saturday.
The EastEnders star, 61, told fans to ‘believe’ in the men’s national football team following a goalless draw against Ghana on Tuesday.
The American dancer, 26, had married her high school sweetheart Jake Burton in November 2018.
Other celebrities who attended the game included Marcus Mumford, David Beckham and Jeremy Clarkson.