Grosvenor Square in the heart of Mayfair in London has often been called ‘Little America’, although it actually takes its name from the Grosvenors, the family who own the land there. It is where the first American Consulate in Britain was found, the consul being John Adams, who later became America’s second president. He was a Founding Father, and the wish to establish cordial relations with the former enemy nation is part of the reason he moved to a house in Grosvenor Square at the corner of Brook and Duke Streets, one which still stands.

Unlike in the United States, where the Constitution was written down by the Founding Fathers nearly 250 years ago and is regarded as sacrosanct by many Americans, the British Constitution has never been formally inscribed but instead has evolved over centuries. The Supreme Court in Parliament Square can only decide if the government has acted within the law as it stands and cannot decide what that law should be. The Court does not have the power to overrule the politicians who sit in the Palace of Westminster opposite. Parliament always has the ultimate authority under the British system.