Ben Thapa studied at the Guildhall School of Music and Drama and the Royal College of Music, London, and currently is supported by the Wagner Society of Great Britain. In addition to his most recent sponsorship from the Wagner Society, Ben has been supported by a number of major bursars, including the Musicians Benevolent Fund and the Levenshulme Trust.

Ben's recent performance as Vanya Kudrjash in Scottish Opera's touring production of Kátya Kabanová drew significant critical acclaim.  Post and Journal commented on a "impressively assured performance in his debut for the company", and Opera Britannia described his singing as "one of the highlights of the evening". Other roles include Corebo La Didone (GSMD / Christian Curnyn "beautiful tone and beautiful phrasing" (Opera)), Mat of the Mint The Beggar's Opera for the Royal Opera at the Linbury Theatre, First Prisoner & Florestan(cover) Fidelio and Armed Man & Tamino (cover) Die Zauberflöte for Garsington Opera, Max(cover) Der Freischütz for the Opéra Comique and Siegmund (cover) Die Walküre for the Wagner Society with David Syrus.