The Isle of Wight holds one of England's most important red squirrel populations, protected by its island geography from grey squirrel invasion.
Red squirrels on the island face welfare challenges from squirrelpox risk should grey squirrels ever establish, road mortality from the island's busy road network, and garden-related risks including dogs and cats. The island's population provides an invaluable insurance population and source for mainland reintroduction. Maintaining biosecurity of the island boundary is the single most important welfare-positive intervention for this population.