Does the rabbit (Oryctolagus cuniculus) count as wildlife or not? It was almost certainly introduced by the Normans primarily as a food source and it remained part of our staple diet, particularly amongst 'country folk', for about 1,000 years. I can remember, as a very small child, my grandmother regularly serving up rabbit stew when we went round to see her. That all changed in 1955 when myxomatosis was introduced. It seems that the rabbit was becoming something of a pest (probably linked to the shortage of food supplies during the war?) and man decided to take control. This vile disease decimated the rabbit population and it ceased to be part of the human diet and other predators of the rabbit declined rapidly, especially the buzzard.
In recent years the numbers have begun to rebuild but it seems myxomatosis is still around and when numbers in a given area grow so the disease reappears and knocks them back again.
No longer favoured by we British as a meal it remains popular with foxes, stoats, buzzards and other animals at the top of the food chain and the rabbits revival has certainly been reflected in an increase in buzzards over the last thirty years.