Spurge Laurel

In the Flora of Northumberland, Swan describes Spurge Laurel (Daphne laureola) as scarce in the county. There are some naturalised plants but he believes the ones found in the Wansbeck valley are native. I wonder if this refers to the above plants growing on the steep North banks of the River Wansbeck at Scotch Ghyll woods. They are easy to look for at this time of year as they are evergreen and are in flower now until April.