"All I was given was the original shot of Hartnell, and a matching shot of Bradley delivering the same lines. [...] So, one facial feature at a time, I gradually turned Bradley into Hartnell, and it wasn't until I replaced his eyes that it all clicked into place. [...] I’m immensely proud of that shot, mostly since it seemed so impossible at first glance."Ben Pickles [src]
Pickles credited director Rachel Talalay for "[getting him] involved in the show in the first place".
The VFX artist also created an official Time For Heroes promotional teaser for series 10 of Doctor Who, featuring the TARDIS in the midst of a ring of tanks.
Known in fandom for his YouTube channel, John Smith VFX, Pickles has been making fan-made Doctor Who title sequences since the age of 16, eight years before his Jodie Whittaker titles hit the screens. He has since produced other notable VFX videos on that channel, often involving the Doctor or the TARDIS, or indeed BBC One's Sherlock. In December 2013, John Smith VFX released Wholock, the Sherlock/Doctor Who crossover, which went "viral", and gained the amateur VFX artist significant online attention.