His teachers were Kim Kashkashian, Milan Skampa, Ian Jewel and Andriy Viytovych.
Nicholas is frequently invited to guest lead viola sections throughout the country and abroad. As such he has appeared with Munich Philharmonic, Royal Philharmonic, City of Birmingham Symphony, Royal Liverpool Philharmonic, BBC Philharmonic, Bournemouth Symphony, Aurora, and Royal Scottish National Orchestras, BBC National Orchestra of Wales, Britten Sinfonia, Royal Northern Sinfonia and City of London Sinfonia. He currently plays as principal viola of Le Cercle de L'Harmonie, a Paris-based classical period instrument orchestra.
Concerto performances include Mozart's Sinfonia Concertante with Zsolt-Tihamer Visontay and the Philharmonia Orchestra, and Penderecki's Viola Concerto with Boston Modern Orchestra Project. On disc he is a featured artist on a Grammy nominated recording of “Four Hymns for Tenor, Viola and Strings” by Vaughan Williams with Royal Liverpool Philharmonic Orchestra, Paul Daniel and Andrew Kennedy, which was also selected as Recording of the Year by John France on MusicWeb International and Album of the Week for ClassicFM. As a chamber musician, Nicholas often participates in festivals around UK and Europe, and has performed with Pinchas Zukerman, Julian Rachlin and Alexander Sitkovetsky.
As conductor, Nicholas has worked as assistant to Jérémie Rhorer on opera productions at the Festival d'Aix-en-Provence and at the Théâtre des Champs-Élysées in Paris.