Siglo de Oro is one of the leading British vocal ensembles of its generation, praised for its golden tone, fresh interpretations, and innovative programming. The group made its professional debut in 2014 at the Spitalfields Festival, and since then has given concerts across the UK, as well as in Belgium, the Netherlands, Germany, Finland, Sweden, Malta and the USA.

Siglo de Oro has made five critically acclaimed recordings with Delphian Records, ranging from music written for Milan Cathedral in around 1500, to new commissions written for the group. Amongst these was the world premiere recording of a mass by Hieronymus Praetorius, released in 2018, which was BBC Music Magazine's Choral and Song Album of the Month. Siglo de Oro's most recent recording, The Mysterious Motet Book of 1539, was awarded the accolade of Stern des Monats in the German magazine Fono Forum, and was one of Music Web International's Recordings of the Year for 2022.

Plans for the 2024-25 season include the group's first concerts in Canada, performances at Wigmore Hall and around the UK.