Gregory was born in Darjeeling, West Bengal, India.[2][4] His father, Neville, was a tea planter, while his mother, Marina, who was originally from Burma, was a local schoolteacher.[4] Gregory and his family moved to London during the early 1960s.[4]
He later studied at the Webber Douglas Academy of Dramatic Art.[2][4] His first professional acting role was in a production of "The Blue Monster", performed at the Arts Theatre in London.[3] His first television role was an episode of Rumpole of the Bailey as Latif Khan in 1979.[3][4]
Gregory became best known for his work on British soap operas, including his recurring role as businessman Guppy Sharma on EastEnders during the mid-1990s.[2] According to his wife, Gregory especially enjoyed working on EastEnders because Elstree Studios, where the show was filmed, was the site of numerous, classic film productions.[2]
Lyndam Gregory died from lung cancer on 15 July 2014 at the age of 59.[3] His death was announced on 21 August in an obituary by his wife, Christine Gregory, published in The Guardian.[4] A non-smoker, Gregory had first been diagnosed in July 2013.[3] His funeral was held at the Breakspear Crematorium in Ruislip on 1 August 2014.[3] Gregory was survived by his wife, Christine, and their daughter, Dominique.[1][3]