Shrub ID please
Can anyone identify this shrub please? It was in several places in my garden here near the sea when I first moved here and I thought it was some sort of Buddleia Alternifolia due to its graceful arching habit. However I discovered long slender thorns on its branches the other day so that rules out Buddleia I assume.Some specimens of it have struggled on under trees here for years. I wonder if it's some sort of native?
Many thanks in advance for any help.