This gentle and beautifully filmed series continues to celebrate the best of British as it delves deep into the secretive world of our forests.

In the Forest of Dean wild boar are thriving – which may not be good news for the bluebells that they love to eat – but this ancient animal is also having some surprisingly beneficial effects on other creatures native to the forest.

For the glorious goshawk, the ultimate forest hunter, and our most exotic butterfly, the purple emperor, the good news is that both are increasing in numbers.

Also watch out for badgers, red squirrels, fallow deer and one of the UK’s rarest mammals – the pine marten.