Cousins, brothers, allies, whichever pet-name you prefer, our Anglo-American relationship runs as deep and intertwined as the roots of many a US family tree. Steeped in history, politics and exchange of popular culture, our lighthearted cross-Atlantic rivalry, nicknames, and squabbles of the past, are fitting of any rough and tumble siblings. But behind the banter there is a loyalty, and a mutual fascination to hang-out hand-in-hand and explore each other’s back yard. Nichola Clarke investigates.