On Tuesday 19th 2013 the Brecon Beacons (in Wales) became the 5th International Dark Sky Reserve. That's one of only 5 places in the world! It joins 2 other British places: Exmoor (in Devon, England) and the Galloway Forest Park (in Scotland). The two other sites are Mont Mégantic in Quebec and NamibRand nature reserve in Namibia.
So really there's no better place to go wild camping than the UK: we do after all have 3 of the 5 International Dark Sky Reserves. Take a look at our guide to wild camping at http://mountainhikesuk.weebly.com/wild-camping.html
to find out how you can enjoy those dark skies.