@strandlines I’ve seen them for the past few years, since 2017 according to my blog. Mostly in the nearby Victoria park. Not seen them there often recently despite regular lockdown visits. Today saw a few in Dawsholm park a couple of miles away. There was talk of getting rid of them as an invasive species. I like them.
@johnjohnston I had thought they were pretty much confined to the SE. I have learned something new!