Wildfires over the weekend also affected Hampshire, Durham, West Sussex, East Sussex, Devon and Somerset.
In Wales, the major incident declared over the Conwy wildfire has now been brought under control, according to North Wales Fire and Rescue Service assistant chief fire officer Justin Evans.
But firefighters are still tackling several active blazes, including in Braichmelyn forestry near Bethesda and the Rhinogydd mountain range near Harlech.
Farmer Gareth Wyn Jones, whose land borders the Conwy Mountain, said he had “never seen anything of that scale”.
“It was unreal,” he said, adding that while ponies grazing on the mountain had escaped, he feared for a neighbour’s pigs as flames swept through surrounding land.
“The biggest worry was that they were going to suffocate in the smoke, but the smoke did carry over them,” he said, confirming the animals had survived.