Email Record: Downton Abbey. Season 6 / written and created by Julian Fellowes ; producer, Chris Croucher ; executive producer, Gareth Neame ; executive producer, Nigel Marchant ; executive producer, Julian Fellowes ; executive producer, Liz Trubridge ; executive producer for Masterpiece, Rebecca Eaton and Susanne Simpson ; a Carnival Films production ; a Carnival/Masterpiece co-production ; Carnival Film & Television Limited.