This black leather armor, built to resemble the scales of a reptile, likely has numerous duplicates, as is common with uniforms that may be needed to costume an entire on-screen army.
The piece was first seen on Amarsaikhan Baljinnyam as Ariq in the 2014 episode of Marco Polo entitled The Wolf and the Deer. Danila Kozlovsky later wore it as Oleg in a 2019 episode of the television series Vikings entitled The Prophet, where additional details were added around the edges of the costume to give it a different look.
i love this photo of Waris Hussein & Russell T Davies released by the Radio Times from their Doctor Who 60th anniversary photoshoot
both of them are gay men who have had a huge part in dr who history, one as a director in 1963-1964 and one as a writer from 2005 to the present day 🏳️🌈