This Overture is constructed from objects (mostly sound objects, but some rather unsound) that I have come across in South London during twenty-five years of music-making. It was written for the Trinity College of Music Prizewinners' Concert of 2008, an annual event when winners of College competitions perform in a public concert. Brahms, in his Academic Festival Overture Op. 80, made use of student drinking songs - so I decided to employ some cleansing operatives, residents of the borough in which we are performing, and of Bermondsey's most famous street, topped with some recognisable friends from the world of orchestra music.