Strumpshaw Fen

Urgent warning to Britons as thousands of Rat-sized spiders invade UK

According to new research, the population of Britain's most enormous spider, which is the size of a man's hand, is increasing. While it may horrify arachnophobes, the Fen Raft Spider's massive population expansion is a conservation success story. In 2010, the spider, which can create webs as large as pizzas (25cm), was on the verge of extinction in the United Kingdom.