25, is a work in one movement, begun in 1984 as a trio for two violins and cello, revised in 1986 for string quartet.

The work was awarded the "BCMS Composition Prize" of the Birmingham Chamber Music Society in 2011.

[4] Prophetiae Sibyllarum (The Prophecies of the Sibyls) is a string quartet in four movements, first performed at the Gasteig in Munich on 22 April 2012.

It was first performed on 1 July 2016 at Schloss Kempfenhausen in Berg, played by the Pelaar Quartet with the composer as the cellist.

It was inspired by chemical experiments that the composer remembered from being a student at Highgate School with teacher Andrew Szydlo.