Extinctions in the UK - the implications for historical romance books

Every so often I'm reading a book and a wolf stalks across the historical landscape, or a red kite swoops down in the streets of London and carries off a kitten. Fascinating background colour, but it did get me wondering about extinction dates for various species in the UK because nothing will pull me out of a book faster than a beaver splashing around in a Regency era river.

So here's a round up of a few extinction dates for species in Britain, although some of these are in dispute.

The...