Grey squirrels are an invasive species in Britain originating from North America and were introduced to Great Britain in 1876. They have since spread across the country and largely displaced the native Red Squirrel. Like other rodents their teeth never stop growing which means that they also need to gnaw. This can lead to damaged soffits, gutters, telephone lines, cables and property. They can make their home in trees, woodland or even roof space. They tend to eat leaves, nuts, roots, seeds and other plants and are known for burying acorns. The only trouble is that they frequently fail to return for the buried acorns which leads to new oak trees popping up all over the place.