Bedford School Chapel Choir Bromley Boy Singers Cantate Colla Voce Singers Eton College Chapel Choir (info only) Glasgow Chamber Choir Lancing College Choir Liedertafel The Liverpool Metropolitan Cathedral Cantata Choir London Cantata Choir Manchester Boys Choir    News Link 25/9/07 Merbecke Choir Southwark Cathedral National Boys Choir Northern Cathedral Singers Peterborough Chamber Choir Poscimur Radley College Rochester Cathedral Voluntary Choir Schola Cantorum The Callington Singers The Cathedral Chamber Choir The Clerks Choral - Collegiate Church of St. Mary, Youghal, County Cork. The Gentlemen of St John's The London Oratory Choirs The Oriana Singers The Rodolfus Choir Treble Rebels Vasari Singers Wellingborough School Chapel Choir Winchester College Quiristers Worcester Cathedral Voluntary Choir