Now that we're starting to get out of lockdowns in the UK I was able to attend a convention in Leeds today with the Rebel Legion. Among the guests was Julian Glover and I took along a photo of him playing 'Jarak' from the episode "Alpha's Child". When he saw this he said that he expected that I would not have noticed what he did to make his character look more alien, apparently he was told no-one would notice when he explained to the production crew how he was going to play the role and so far he's been right. I certainly didn't notice.
He never blinked.