A look at four of Britain’s national parks and the people who live and work in them.

A look at the New Forest. Once a royal hunting ground for William the Conqueror, it is now a unique mosaic of open heathlands, ancient woodlands, coastline and picturesque villages.

Pembrokeshire Coast National Park offers breathtaking views of rugged shorelines, sandy beaches and offshore islands, provides a haven for grey seals and features numerous seabird colonies.

Steeped in myth and untamed beauty, Dartmoor National Park's vast moorlands provide a a sanctuary for rare plant and animal species as well as a treasure trove for archaeologists.

The Northumberland National Park is characterised by a unique landscape of wild moors, gentle hills and deep valleys criss-crossed by clear rivers.