Until 2009 Lawrence was the cellist in the Harpham String Quartet whose performing highlights included appearances at the Wigmore Hall, Fairfield Halls and Rachmaninov Hall, Moscow. They also gave recitals at the Harrogate International Festival, Stratford-on-Avon Festival, Mostly Mozart Festival, King's Lynn Festival, Chichester Festival, Leeds Castle, Honiton Festival and other music societies in the UK. During his time with the quartet he worked regularly with other prestigious musicians including Emma Johnson, Janet Hilton, the Chilingirian Quartet and the Bochmann Quartet. In 2007 they were selected as Young Artists by the Park Lane Group and performed in the New Year Series 2008 at the Purcell Room. 
 
He now gives recitals with the Janos String Trio who recently performed at the Leeds International Chamber Music Series, St. Giles Cathedral, Edinburgh and St. James Piccadilly, London.