Mid-Wales and Northumberland tie in with my own limited experience. Also https://www.nationalparks.uk/dark-skies/ https://www.nationalparks.uk/dark-skies/ Hig

Mid-Wales and Northumberland tie in with my own limited experience. Also https://www.nationalparks.uk/dark-skies/ https://www.nationalparks.uk/dark-skies/ Highlands of Scotland a good bet as well. https://gostargazing.co.uk/regions/country/scotland/highlands-scotland/ https://gostargazing.co.uk/regions/country/scotland/highland... There are shades of sky darkness. Estimating the limiting magnitude you can see on a given night is a fun thing to do... https://nineplanets.org/estimating-limiting-magnitude/ https://nineplanets.org/estimating-limiting-magnitude/