John Warner founded Orchestra for the Earth in 2018 and has shaped its artistic work ever since, from the annual Alpine Tours and Earth Hour concerts to new commissions, education projects and collaborations across the UK and Europe.
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Alongside OE, John is Principal Conductor at Musiktheater im Revier in Gelsenkirchen and Music Director of Oxford Opera and Southern Sinfonia. He has conducted orchestras including the London Symphony Orchestra, BBC Philharmonic, Athens State Orchestra, Luxembourg Philharmonic and Berliner Symphoniker, and has worked at opera houses including Glyndebourne, Palau de les Arts Valencia and the Théâtre des Champs-Élysées.
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In 2023 he was Artist-in-Residence at the Beijing Music Festival. In 2025, following a performance at the Concertgebouw Mahler Festival, he received the Mahler Foundation’s inaugural Mahler Award in recognition of OE’s artistic and environmental work.
John Warner
Founder & Artistic Director
Photograph of John Warner © Benjamin Ealovega.
Marina Mahler
Founding Patron
Marina has long been an ardent advocate for young musicians and artists, as well as for social and climate justice. In the 1980s, she initiated the Mahler, Vienna and the Twentieth Century Festival with Claudio Abbado and the London Symphony Orchestra. She later co-founded the Mahler Conducting Competition in Bamberg, now one of the world’s leading competitions for young conductors, and established Mahler & LeWitt Studios in Spoleto, based around the former studios of her mother, the sculptor Anna Mahler, and the artist Sol LeWitt.
Most recently, she founded Mahler Foundation, which brings the legacy of her grandfather, Gustav Mahler, into the twenty-first century through music, education, artistic exchange and environmental work, while encouraging new generations to engage with his ideas.
Board of Trustees
Ben is Leverhulme Early Career Research Fellow in Classics at the University of Liverpool. He studied for a BA in Classics at Oxford, an MA in Indo-European linguistics at Cologne, and a DPhil in Linguistics at Oxford. He specialises in ancient Greek comedy and in Greek literature from the Roman Empire. A keen amateur violinist, Ben has been leader of the Oxford University Philharmonia, the Orchestra of the Collegium Musicum in the University of Cologne, the Hertford Bruckner Orchestra, and the St Peter’s College Chamber Orchestra.
Benjamin Cartlidge
Andrew is a barrister at Essex Court Chambers, a Harmsworth scholar and Bencher of Middle Temple, a Fellow of the Chartered Institute of Arbitrators and a Deputy High Court Judge. In 2011 he obtained an MA from the Courtauld Institute of Art, where he specialised in British Modernism. He is a Trustee of the V&A, the Aurora Orchestra, Ensemble Plus Ultra, the National AIDS Trust and Shelter From The Storm. He is also Chair of The Reviewing Committee on the Export of Works of Art and Objects of Cultural Interest.
Andrew Hochhauser KC
Photograph of John Warner © Benjamin Ealovega.
Alycia is a Senior Consultant at Baringa Partners, a certified B Corporation® who have become one of the UK's most trusted consulting firms across multiple sectors including Sustainability, Energy and Environment. Alycia is a keen singer and violin player having graduated from Oxford in 2017 with BA in Music. Alycia has been part of the OFE family since it was founded and is passionate about bringing the mission to life alongside the rest of the board.
Alycia Jewes
Phoebe graduated in 2017 with a BA in Music from Oxford, where she performed frequently as a clarinettist with OFE musicians. In 2017–2018 Phoebe studied for a masters in Musicology in at the University of Amsterdam, focusing on cultural studies and its political intersection. Now working in the political field, she hopes to continue to champion the arts. Bringing its access to all sectors of society and encouraging its use to draw attention to and highlight issues that affect us all is something she is thrilled to be able to do as a trustee of OFE.
Phoebe Potter
Peter is a London-based investment professional at a UK equity hedge fund within Man Group, specialising in quantitative analysis and environmental, social and governance factors. Alongside his finance career, he is a keen musician, focusing on keyboard instruments and Javanese gamelan, and holds a First-Class Honours degree in music from King’s College London. He supports music education through the London Philharmonic Orchestra’s New Generation Board and is also an experienced ultramarathon runner.
Peter de Souza (Chair)
Ben is Managing Partner of Camberwell Energy. He has 20 years professional experience working at the frontier of the clean energy transition in roles across business, government and finance. He also has voluntary experience with musical groups, including as Chair of the Board of Trustees of Ensemble Plus Ultra from 2016-20 (and Trustee for four years prior) and as Development Adviser to No Borders Orchestra from 2014-19. He is excited by Orchestra for the Earth’s mission and is delighted to be part of the team.
Ben Moxham
Advisory Council
Marina Mahler
Board of Trustees
Benjamin Cartlidge
Alycia Jewes
Andrew Hochhauser KC
Ben Kimberley
Ben Moxham
Phoebe Potter
David Gothard CBE (awarded for contributions to British film and theatre.). Director and producer. Formerly artistic director of Riverside Studios and Artistic Associate at the Haymarket Theatre ,Leicester and the Abbey Theatre ,Dublin.Board director of Dance Umbrella. Advisor to the Anna Mahler/Sol LeWitt residencies in Spoleto and to the Gustav Mahler Foundation. Musical career began with the East Suffolk Schools Orchestra and East Suffolk schools with Benjamin Britten and the English Opera Company; Edinburgh University with Herrick Bunney.
David Gothard CBE
Prof. Martin Siegert FRSE
David Gothard CBE
Advisory Board
Prof. Martin Siegert FRSE is Deputy Vice-Chancellor (Cornwall) at the University of Exeter and Chair of The UK Arctic and Antarctic Partnerships committee. Previously he was a Professor at Imperial College London and Co-Director of the Grantham Institute since May 2014, where he now holds a visiting professorship. Before that he was Head of the School of GeoSciences at the University of Edinburgh, where he is now an honorary Professor. In 2013 he was awarded the Martha T Muse Prize in Antarctic Science and Policy.
Prof. Martin Siegert FRSE
Photograph of Ben Cartlidge © 2018 Zak Thomas-Johnson;