After reading music at St Catharine's College, Cambridge, Nicholas studied clarinet with Hans Deinzer in Hanover on a German Government Scholarship and at the Aspen Music School on an English Speaking Union Scholarship. In 1992, he was appointed Principal Clarinet of the Royal Liverpool Philharmonic with whom he has played concertos by Copland, Debussy, Weber, Nielsen, Bruch, Richard Strauss and Mozart. He has also been Principal Clarinet of Milton Keynes City Orchestra since 1991. He has appeared as guest principal with most of Britain's orchestras.

As a soloist Nicholas has appeared at most of Britain's important festivals and halls including the Wigmore and Queen Elizabeth Halls, Edinburgh Festival, Cheltenham, Bath, Brighton and Huddersfield. An enthusiastic advocate of new music for the clarinet, he gave the première of the Clarinet Concerto by Adam Gorb in 1999 commissioned by the RLPO. Other composers who have written new works for him include Hugh Wood, Sir Richard Rodney Bennett, Jonathan Lloyd, Andrei Eshpai, Yuri Kasparov, Alan Ridout, Peter Fribbins, Emily Howard, Matilda Brown and Anthony Powers. In 2005, he gave the first BBC broadcast of Giya Kancheli's haunting work Midday Prayers in the presence of the composer. In 2007 he premièred a new work by David Horne with Ensemble 10/10 and a Clarinet Quintet by Hugh Wood. In a major recital the same year he performed 2 new works for for clarinet and electronics by Matthew Fairclough and Ian Percy at Liverpool Hope University alongside Boulez's classic 1980s work Dialogue de l'ombre double and first UK performance of Nico Muhly's It goes without saying. In 2010 he premiered a new Clarinet Concerto commissioned by the RLPO from the Catalan composer Benet Casablancas subtitled Dove of Peace after the iconic Picasso drawing. His performance of this piece can be viewed on youtube. 2012 saw the première of a new Clarinet Quintet by Emily Howard with the Danel Quartet. and most recently he premièred a new Clarinet Sonata by Anthony Powers. Over the years he has played at four Clarinet Fests of the International Clarinet Association in Texas, Stockholm, Porto and Assisi premiering works by Adam Gorb, Richard Rodney Bennett, Edward Gregson, David Horne, Hugh Wood and recently discovered works by Iain Hamilton and an early work by Sir Arnold Bax. Master Classes have taken him to Europe, Japan, China and Russia.

Nicholas Cox's recording of the Mozart Clarinet Concerto and Quintet (ClassCD 1502) was released in May 2003. In its first week it was CD of the week on Classic FM and has been one of the most frequently broadcast versions of the Concerto on the airwaves ever since. Gold Medalist at the 1984 Royal Over-Seas League Music Competition in London and 2nd prizewinner at the 1987 Jeunesses Musicales International Clarinet Competition, Nick has since played concertos with City of London Sinfonia, North German Radio, Prague Symphony Orchestra, the RLPO and Milton Keynes City Orchestra. His reputation as a player is matched by a teaching career of distinction. During his time as Senior Tutor, Clarinet at the RNCM his pupil, Mark Simpson at Junior RNCM became the first musician to win both BBC Young Musician and BBC Young Composer of the Year awards in 2006 and in 2011 all three orchestral clarinet vacancies in UK orchestras went to his former students from RNCM.

He co-founded and ran Ensemble 10/10 with cellist Hilary Browning between 1998 and 2003. Since 1997, thanks largely to his pioneering efforts, the Rodewald Concert Society (founded in 1911 and named after Alfred Rodewald, a Liverpool benefactor and close friend of Edward Elgar) resumed its successful promotion of chamber music in Liverpool and celebrated its centenary in 2011.

He has been a clarinet design consultant for Yamaha for several years and plays on Yamaha CSGH clarinets and works closely with Heinz Viotto the renowned German mouthpiece maker

Radovan Cavallin was born in Zagreb, Croatia in 1969. At the age of thirteen he was the youngest student ever to have entered the Academy of Music of Zagreb University obtaining a Diploma with distincion four years later. In 1986 he was chosen from 76 candidates to enter the Paris National Superior Conservatory of Music. There he obtained:
- 1st superior prize of chamber music, given unanimously in the class of Christian Lardé in 1988.;
- 1st superior prize for clarinet given unanimously in the class of Guy Deplus in 1989. During his studies in Paris he was awarded four grants;
- 1986 the Ivo Pogorelich grant;
- 1987 the Nadia and Lily Boulanger grant;
- 1988 and 1989 the french government grant.

He has won prizes in the following competitions:
- 1st prize at the National Yugoslavian Competition for clarinet in 1981, 1983, 1995, and 1986.;
- 1st prize at the International competition for clarinet in Ancona, Italy in 1984.;
- 1st prize from musical critics of the “Vjesnik” newspaper in Croatia (1985).
- 1st prize “Dragan Gürtl” from the Academy of Music of Zagreb (Croatia) for being the most outstanding student and performer of clarinet in 1986
- “Union of Universities of Zagreb” prize for being the youngest and most outstanding student of clarinet in 1986.
- 2nd prize at the International competition for clarinet “Ciudad de Dos Hermanas”, Seville, Spain in 1995.

During his studies in Croatia and France he studied with: Petar Fabijanic, Josip Nochta, Guy Deplus and Guy Dangain. He has performed over 400 concerts as a soloist in Croatia, Slovenia, Bosnia, Macedonia, Serbia and Montenegro, Kosovo, Italy, France, Japan, Belgium, Portugal, Germany, Spain, Colombia and the former Chechoslovakia accompanied by: Warsaw Symphony Orchestra, Poland; National Symphony Orchestra of Gotvaldow, (former Chechoslovakia); Symphony Orchestra of Budio Theatre of Bologna, Italy; “Soloist of Zagreb”; Zagreb Symphony Orchestra of Radio and Television, Croacia; Zagreb Philharmonic Orchestra; Zagreb Chamber Orchestra; Belgrade Symphony Orchestra, Serbia; Gran Canaria Philarmonic Orchestra, Spain; Gran Canaria Symphony Orchestra; The French-Belgium Orchestra of Bruselles, Extremadura Philharmonic Orchestra etc.

He has made appearances at the festivals of Ferrara, Italy; Dubrovnik, Croatia; Bad Hersfeld, Germany; Granada, Spain, Clarinetissimo, Brussels, Belgium, Lisbon, Portugal and recordings for Croatian, French and Spanish radio and companies such as Croatia Records, Yugoton, Agrup Arte Producciones, Maguelone (sponsored by SELMER,Paris), Cristal Records, ASV, Summit Records and Arte Nova BMG.

He has given Clarinet Master Classes in: Zagreb (Croatia), Milna Brac, (Croatia), Groznjan, (Croatia) Opatija, (Croatia), Brussels Superior Conservatoir (Belgium), Lisbon National Clarinet Congress(Portugal), Madrid Royal Superior Conservatoir (Spain), Murcia Superior Conservatory, (Spain) Banda Municipal de Albacete, (Spain) Avila, (Spain) Quintanar de la Orden-Toledo (Spain), Areciffe, Arucas, Firgas, Las Palmas (Spain); Ibague, (Colombia) and also been a member of the jury at the 1oand 2a,3o and 4oInternational Clarinet Competition “Julian Menendez” in Avila, Spain Since 1989 he has held the position of principal clarinet and professor of the Academy of the Gran Canaria Philarmonic Orchestra in Spain working with conductors such as Rostropovich, Jurovski, Rhozdestvensky, Lopez Cobos, Herbig, Frubeck de Burgos, Gianandrea Noseda, Norman del Mar among others.
He is also a founding member of the following chamber music groups:
- Cuarteto Atlántida
- Trío Spohr
- Cuarteto Reinecke
- Ensemble Isola
- Alisios Camerata

From 2002-2010 he was a clarinet professor at “Conservatorio Superior de Musica de Canarias” in Las Palmas.
Radovan Cavallin is Backun, Selmer and Rico Artist and performs on Backun Moba arabesque mouthpiece, barils and bells, SELMER “Privilege“ clarinet and Rico reserve Classic reeds.

Davor Reba is a Croatian clarinettist and a teacher. He studied with professor Giovanni Cavallin and earned his Bachelor's and Master of Music Degree with professor Josip Tonžetić at the Zagreb Academy of Music. Reba specialized with professor Walter Boeykens in Antwerpen and at various seminars. He earned the first award at the last competition of the clarinet students in former Yugoslavia and gave many solo recitals in Croatia and abroad with the acknowledged pianists Ljubomir Gašparević, Darko Domitrović, Veljko Glodić, Marina Pletikosa, Martina Cukrov, Vlasta Gyura, Lana Bradić, Anne Marie Wuyts and many others.

Reba performed solo with the Zagreb Philharmonic orchestra, with the Croatian Chamber Orchestra and Zadar chamber orchestra. He also performed with many chamber ensembles (Cantus, The Zagreb String Quartet, The Porin Quartet, The «Arundo Donex» Clarinet Quartet, The «Crowind» Wind Quintet, The Varaždin Chamber Orchestra and The Croatian Chamber Orchestra).

He is a co-founder of the “Wind Octet ZF” and of the Septette «Ad libitum ZF» with which he has regularly performed. From 1997 he has been a full member of the Zagreb Philharmonic Orchestra and since 2001 its solo clarinettist. With the Zagreb Philharmonic Orchestra he toured Europe, Japan and Mexico and has co-operated with many world famous conductors and soloists. Reba represented Croatia as a member of the World Philharmonic Orchestra in Paris in 2006.

Reba is an professor at the Academy of Music in Zagreb. He has held regular summer seminars in Pučišća (the island of Brač).
He is one of the founders of the Croatian Clarinet Society.