Just before midday, BBC weather said the record for the hottest early Bank Holiday Monday had been beaten.
More important than that is the that dear old Blighty is boasting conditions more reminiscent of foreign climes - with the United Kingdom basking in temperatures hotter than Madrid, Athens and Miami.
He said temperatures needed to soar above 23.6C (74.48F) yesterday in the United Kingdom for it to be the hottest May Day bank holiday on record.
"The figure we'd be chasing here would be 28.6C (83.5F) so we've got about a 30% chance of equalling an old record or setting a new one".
PA Wire/PA Images Grainne Gallanagh and Ruth Chalke sunbathing in Hyde Park.
By Friday some longer spells of rain may arrive into the west, while heavy showers may hit the South East.
The weekend's hot conditions were created by a mix of low pressure, light winds and consistent sunshine.
Weak weather fronts moving from west to east mean there will be a fresher feel to the air from the middle of the week onwards but temperatures in the south east of England will still be reaching somewhere up in the mid twenties.
"But I think we can expect things to be not as warm as they are now, but also not as dry as they are now", he said.
And low cloud, mist and sea fog is affecting the northern coast of Devon and Cornwall.
The brief spell of summer weather is due to hot air coming in from 86F (30C) southern Russian Federation, leading meteorologists to dub the heatwave the "Roast from Russia".
But forecasters warned the heatwave is not set to last, with the weather for the rest of the month described as "changeable".
Met Office forecaster Craig Snell said: "It looks likely we'll at least see our warmest Bank Holiday Monday on record on Monday".
He said temperatures will generally be above normal, but this will depend on whether it is a sunny day or a sunny wetter day.