Yeah there are a few in there that aren't British but invasive, at what point and tone scale do you class an immigrant as British
Interesting article about Jack Perks who planned to spend a year taking pictures of all of Britains fish.
All of Britain's Fish ?
Or just one example of each species ?
I'm sure I remember a Daily Mail article from a few years ago scaremongering that piranhas were loose in lakes in the UK though.