We are lucky enough to have Exmoor National Park in Somerset.  
The bees spend about 4 weeks at the end of the summer foraging on the Ling heather which flowers there in August and September, much later than the Bell heather.  The strongest colonies are strapped up and transported to the high moorland for this brief holiday.  Sometimes it rains, or the heather beetle gets there first and we come back empty handed but the honey is so amazing, rich and strong that it's worth the effort. Known as the Queen of honeys it's not like any other taste. It's strong, thixotropic (jelly like) and doesn't easily crystallise.