Fortress Britain

As Stuart Laycock's book All the Countries We've Ever Invaded: and the Few We Never got Round to shows, the British have not been backward in coming forward when it comes to aggressive forays abroad. But it hasn't all been one way. In 1193 for example, the Danes teamed up serial offenders, the French, for a full-scale invasion. The French Prince Louis the Lion came close to success exactly 150 yea...