Trinity Boys Choir is one of the busiest and most successful in the world. It has enjoyed a high professional profile, both at home and abroad, for almost fifty years.

In the world of opera, the boys appear on such prestigious stages as Glyndebourne, the Royal Opera House, Covent Garden, English National Opera and various opera houses abroad, including the Opera Comique, Paris, La Fenice, Venice, and at the Aix-en-Provence Festival. The boys are especially well known for their part in Britten's A Midsummer Night's Dream in which they have appeared in over one hundred and fifty professional performances, and they feature in both the Warner DVD and on the Virgin Classics CD of the opera.

On the concert platform, the Choir is regularly invited to perform at the BBC Proms, and was honoured to perform in Her Majesty the Queen's 80th Birthday Prom Concert at the Royal Albert Hall in 2006 and at Sir Neville Marriner’s 90th Birthday Prom Concert in 2014. The boys have performed with all the major London orchestras, with Sir John Eliot Gardiner and his Monteverdi Choir, and with Paul McCreesh and his Gabrieli Consort in Spain, Germany, Italy and the UK. Trinity Boys Choir has also been invited to perform in Vienna with the Vienna Boys Choir, and in Belgium, Finland, France, Germany, Holland, Hong Kong, Israel, Italy, Japan, Malaysia, Norway, Poland, Spain, Switzerland and the USA.

The Choir's many recordings include John Rutter's Bang, an opera written for the boys, Britten's A Boy Was Born with the BBC Symphony Chorus, and Walton's Henry V with the BBC Symphony Orchestra and the BBC Singers. Several feature films also incorporate the voices of Trinity Boys Choir including the Disney blockbuster Maleficent, Angelina Jolie’s Unbroken as well as the Hunger Games movie, Mockingjay – Part 1, starring Jennifer Lawrence. The choir has been directed by David Swinson since 2001.