On the concert platform Andrew Mayor performs regularly with choirs and choral societies throughout Europe.  At the Osterfestpiele in Salzburg Andrew was a soloist in Beethoven's Choral Fantasia at the Grossesfestspielhaus with Maurizio Pollini and the Berlin Philharmonic Orchestra conducted by Claudio Abbado. Other Appearances include Acis and Galatea with the City of London Sinfonia at St John's, Smith Square, Sea Symphony in Sherbourn Abbey,  Carmina Burana and L'Enfance du Christ  in the De Montfort Hall, Leicester with the Leicester Philharmonic Choir, Petite Messe Solonelle in Ripon Cathederal, Missa Solemnis in Wells Cathederal,  Fauré Requiem and Tippett A Child of our Time in St James, Piccadilly, London, Brahms Requiem in Ely and Birmingham Cathedrals, Purcell Come ye sons of Art at the Queen Elizabeth Hall London, Messiah at the Royal Albert Hall and the title role in Elijah in the Dukes Hall of the the Royal Academy of Music.  Conductors Andrew has worked with in oratorio include Sir David Willcocks, Hilary Davan Wetton, Mark Shanahan, Andrew Phillips, Nicholas Kramer, Christopher Green OBE and Ivor Bolton. He also performs frequently in gala concerts which recently have included a Viennese Evening at the Queen Elizabeth Hall and an opera gala at the Linbury Theatre, CoventGarden.  

Andrew has appeared with many of the British opera companies and has a wide repertoire of roles.  Rôles include Silvio I Pagliacci for Castleward Opera, The Vicar (Albert Herring), Masetto (Don Giovanni) and Ford (Falstaff), for English Touring Opera, "the Villains" in Les Contes d'Hoffmann for the Iford Festival, the title role in Macbeth for Surrey Opera, the Count (Le Nozze di Figaro), Rigoletto, Eugene Onegin, Renato in Un Ballo in Maschero at the Holland Park Festival. He has also perfomed the title role in Don Giovanni for Mid Wales Opera, Lorenzo in I Capuleti e I Montecchi for Grange Park Opera and covered Amonasro (Aida) for Scottish Opera. 

International work includes a nationwide tour of the USA performing Danilo (Die lustige Witwe) for Columbia Artists, performances throughout Europe of Sharpless in Madama Butterfly for Compagnia d' Opera Italiana di Milano. Monsieur Gai in Lully's Le Bourgeois Gentilehomme in France, Escamillo Carmen for the Arts Council of Penang, Malaysia and Germont La Traviata for the Kuala Lumpur Symphony Orchestra, also in Malaysia, Gianni Schicchi in the Teatro Communale Monteleone di Spoleto and concerts in Tokyo, Osaka, Kyoto and the opera house in Manaus.

For the Royal Opera House, Covent Garden Andrew sang Starveling (A Midsummer Nights Dream) in the Linbury Theatre conducted by Richard Hickox., Last season Andrew sang Beckmesser in Die Meistersinger von Nürnberg in Edinburgh, the Music Master in a concert performance of Ariadne auf Naxos at the Windsor Festival and Prospero in Berio's Un Re In Ascolto at the Städtische Bühnen Münster conducted by Fabrizio Ventura.  In the current season he sang Man 1 in Harrison Birtwhistle's The IO Passion at the Konzerthaus, Berlin.