Andrew became principal of the London Symphony Orchestra in 1986 . During his orchestral career he has maintained his place on the worldwide solo concert platform alongside an active role in the field of chamber music.

He first played with the LSO in 1977 under Celibidache and as guest principal on their 1983 world tour. He later became principal clarinet of the Academy of St. Martin-in-the-Fields, a position held alongside his LSO commitment  until 2008.

 His extensive solo career has taken him to La Scala Milan, La Fenice Venice, the Musikverein in Vienna and across the USA and Australia.

Andrew has worked with some of the most distinguished individuals in the world of chamber music such as Alfred Brendel, Andre Previn, Andras Schiff, Lynn Harrell, Emmanuel Ax, Hélène Grimaud, Sylvia McNair, Edita Gruberova and with many leading string quartets

In addition to numerous recordings with the LSO, on disc and for film and TV , Andrew has recorded the core solo and chamber clarinet repertoire with various record companies.

Andrew is in demand as a teacher and woodwind consultant and gives masterclasses, coaches orchestras and adjudicates competitions all around the world.

He teaches at the Guildhall School  and the Royal Academy of Music