After winning four star reviews at the Edinburgh Fringe and praise from the likes of Stephen Fry, Luke's one-man comedy show will soon open at the Ambassadors Theatre in the West End.
Performing alone, he whirls through a multitude of characters in his satirical take on Downton, which began on Youtube.
Luke explains how he came up with the concept and how the project snowballed as Downton took off. He talks Gavin Ramjaun through his method for perfecting his impressions - and why it's more than just tweaking the voice.
Ahead of his West End performance, he does his best Andy Murray and transforms into a few of the Downton cast members live in the studio.