The Wimps were a very ancient peoples who predated the Romans, Gauls and Teutons in Britain by at least 2000 years. There is archological evidence of their presence that even predates the Picts and Chuffles. (Incidently, those two tribes, noted for their skill at mining, developed the technology that led to the full exploitation of the cheese at Cheddar Gorge. The Wimps paid them handsomely for that.)
    Once the Cheddar was exhausted, it was the Wimps who developed the sour milk based substitute that is called cheese in modern times. It took several generations to develop anything that resembled the Cheddar in taste. The first cheeses they produced were white and much softer than either the mined Cheddar or the later milk cheddar. For reasons unknown to us today, they called that first cheese 'mozzarella' and it most likely was made from sheep milk, cows not having yet been introduced to the British Isles.
    The name by which the Wimps called themselves has, most unfortunately, been lost to history. The name 'Wimp" derives from the name they were called by the Picts, and is of very complex origin. The Wimps were noted for their prophets. (And profits, but that's only tangentially related to this history.) They had a prophet King who predicted that one day people called Romans would invade their land, steal the recipe for mozzarella cheese, take it back to Rome and claim it as their own invention. Had it not been for the prophecy, the Wimps still extant at the time of the Roman invasion could not have cared less--they thought mozzarella to be an inferior cheese.   
    The King also foresaw that the decendants of the Romans would come to be called Italians. Gazing into the smoke one night, he saw boatloads of Italians sail across the great ocean to a new land called the Eastern Seaboard of the USA. They took their stolen mozzarella recipe with them, not to mention directions on how to make pepperoni and some of the most marvelous tomato sauces ever. After 5 years, they became Italian-Americans, and in their new land, came up with the creation now called pizza pie. It caught on quickly in North America and spread rapidly throughout Western Europe, all except parts of Britian, where they still didn't much care for mozzarella cheese.
    When the king awoke from his trance he ran out to the edge of the Cheddar Gorge and loudly proclaimed his vision. The Picts began calling the king and his tribe Wthiamppamiaotp, which stands for 'will the Italian-Americans make pizza pie and market it all over the place.' The name was unpronouncable by anyone other than the Picts, so it was soon shortened to 'the Wimps of Britain.'