[1] HGO brings live opera, fully staged with orchestra, and offers performance opportunity and training to young singers.

[7] The Directors of the Company and Trustees of the Charity, as of April 2020,[8] are: HGO's Co-Presidents are Dame Emma Kirkby and Howard Williams.

[25] [26] The company produced a new edition of Francesco Cavalli's 1643 opera L'Egisto at The Cockpit Theatre, London, in June 2021.

[27][28] In March 2022, the company gave the British premiere of the 1774 Hebrew-language oratorio Ester by the Austrian composer Cristiano Lidarti with libretto by Jacob Raphael Saraval.

The performance at the Free Church, Hampstead Garden Suburb raised £1,200 for the Red Cross Ukraine Emergency Appeal.