Sadler is a chartered engineer who specialises in modern theatre hydraulics and is actively involved with the running of the Institution of Mechanical Engineers Eastern Area, acting as treasurer for the organisation. He is also a technical associate of the Royal National Theatre and received a Lifetime Achievement award from the Association of British Theatre Technicians in 2009.
Since 1978, Sadler has been closely involved with many industrial and theatrical projects including the stage settings for Andrew Lloyd Webber's Starlight Express and The Phantom of the Opera. He is currently working on the hydraulic systems for new mobile staging displays for Disney Hong Kong and ongoing theatre upgrade projects.
(Jim Evans)
