Danny Hargreaves is Sherlock's Special Effects Supervisor. It's
important not to confuse a Special Effects Supervisor with a
Special Visual Effects Supervisor - the latter is involved with
Computer Generated Imagery. Everything a Special Effects Supervisor
creates is real, live action, and on the set, be it water and rain,
to explosions and fire, and everything in-between, such as bullet
hits, shattering glass, and mechanical work.
Danny has worked in the field for fifteen years, but came to
prominence when he began work on Doctor Who as a technician in 2006
- his first credited episode was the Steven Moffat scripted 'The
Girl in the Fireplace.' Since then, he has risen to the role of
Special Effects Supervisor, and has worked on every episode of the
series. In 2010 he founded REALSFX, becoming separate from the BBC
but still providing services for Doctor Who and Torchwood. Since
independence, REALSFX has provided special effects for film and
television, including 'The Big I Am' (2010), 'Submarine' (2010),
and every episode of 'Sherlock.'