Temperatures forecast to reach 32C in London on Saturday as authorities issue reminder to check on vulnerable people

Emergency services have issued warnings over the increased risks of wildfires before an expected heatwave this weekend, with temperatures forecast to reach 32C in some parts of the UK.

Authorities reminded the public to check in with older people and those with health conditions as forecasters predicted a burst of heat expected to peak this weekend before easing early next week.

Most places in southern England will reach temperatures above the threshold for a heatwave – recorded when areas reach a certain temperature for three consecutive days – by this weekend.

In London – where the threshold is 28C – temperatures could peak at 29C on Thursday and 31C on Friday, before hitting 32C on Saturday.