On Friday, the maximum temperature in England of 35.2C was recorded in Coton-in-the Elms, Derbyshire, while Usk, Monmouthshire saw the highest temperature of 34.3C in Wales.
Threave, Dumfries and Galloway recorded Scotland’s highest temperature of 29.7C, while the highest temperature in Northern Ireland peaked at 27.4C in Killowen, Co. Down.
On Saturday the highest temperatures will be in the west Midlands, south-east Wales and parts of southern England – up to 33C.
A brisk north-easterly wind means that eastern parts of England will feel a drop off in temperatures.
North Sea coasts from Northumberland to Suffolk could remain cloudy and misty on Saturday but should be much sunnier on Sunday.
Scotland and Northern Ireland will also see more cloud.
Showers in eastern Scotland will have died out by Sunday bringing more sunshine.
Temperatures will be 23 or 24C at best but eastern Scotland will be cooler.
On Sunday, as the wind strengthens, temperatures will be a few degrees lower still in England and Wales – but could still reach 30C in southern England.