Palmate newts are too of least concern. They may be protected but in Britain they certainly aren't rare. Smooth newts are more common in general but strangely there are more palmate newts in my garden than smooth newts but palmate newts don't leave the water as often and as willingly as smooth newts but that's just something I have observed. If you really want some newts then you can purchase some Chinese fire belly newts or so etching similar as there is always plenty in the shops.