Whilst walking on the five weirs walk today, I came across a mink hunting in the water and on the river bank. The hunt was successful as it managed to catch a rat.
As I said in the title, I've never seen a mink before.
Sorry to doubt you Melv, you would be amazed when I take people on nature walks, see a water vole and are convinced it's a rat. If you are not keen on none native predators, you could look for a local vole protection group and let them know the mink's location.