2018 Schumann Street (Spitalfields Music)
2017 Fretwork
2016 Shostakovich 15 - Carducci String Quartet
2015 Oxford Lieder Festival
2014 Champs Hill
2013 Music in the Round
2012 Apartment House
2011 Takács Quartet
2010 Wigmore Hall: Haydn Bicentenary Season Celebrations
2009 Britten Sinfonia Lunchtime Series
2008 International Musicians Seminar Prussia Cove
2007 Dante Quartet

Prior to 2007, this category was known as Chamber Ensemble. No award was made in 2005.

2006 Leopold String Trio
2004 Belcea Quartet
2003 Nash Ensemble
2002 The Composers Ensemble
2001 Belcea Quartet
2000 Florestan Trio
1999 Schubert Ensemble
1998 Brodsky Quartet
1997 Endellion String Quartet
1996 Chilingirian Quartet
1995 Borodin Quartet
1994 Birmingham Contemporary Music Group
1993 Arditti String Quartet
1992 Takács Quartet
1991 Lindsay Quartet
1990 Nash Ensemble