Horner Woods, part of the National Trust’s Holnicote Estate is home to 16 of the UK’s 18 bat species. Being notoriously shy creatures, the other two sorts may yet still be hiding somewhere amongst the gnarly oak trees; these woods are apparently Britain’s largest area of ancient oak woodland. Whilst in the woods, keep a keen nocturnal look out for the elusive Barbastelle Bat. Although unlikely to win any beauty contests this pug-faced and extremely rare bat has a significant breeding population here. Sitting quietly as dusk falls on a summer evening will probably yield a fair few sightings, or you can join in a guided walk run by the National Trust or Exmoor National Park Rangers who have an added advantage with their ‘bat detectors’.