The Autumnwatch team may have observed “the highest population of badgers anywhere ever recorded”, presenter Chris Packham has said.

The animals were tracked in the dark during last night’s episode broadcast from Wytham Great Wood near Oxford.

The team relied on thermal cameras that see the creatures’ body heat.

Mr Packham said there were about 250 adult animals in about 20 social groups, with 1,000 holes to emerge on the wood’s grounds.