Ken MacGregor — often erroneously spelt "McGregor" in many Doctor Who reference works, including the official BBC website — provided lighting for The Highlanders alongside George Summers. He had a long career in lighting, having credits spanning the thirty years between 1955 and 1985.
He went on to become a Lighting Director specialising in music and Light Entertainment programmes. His credits include many Ballets and Opera items for the 'Gala Performance' series. The ballet 'Firebird' was made in the biggest studio at Television Centre, and the final scene was memorable because the final shot developed to show the full height and length of the studio - something that had not been seen up till that time. He worked with many of the world famous ballet dancers in studio productions of note. He was honoured in America for his work on an Operatic programme.
At the other end of the entertainment scale he was Lighting Director on 'The Generation Game' for a number of years. He worked with producer Yvonne Littlewood on many 'music' programs including "The World of Music", Pet Clark, Val Doonican, Nana Mouskuri and many others. Some of the Two Ronnies series also added to the variety of programmes lit by Ken MacGregor.