>>728 the BFI one is Jane but one fan on tumblr lonelledon did a whole investigative thing and found it was Annabel Brog because she found a pic of her in the exact same outfit as that Donmar one. Down to the handbag. Astonishing what these girls can uncover. Unless Jane has the same outfit. Which is possible!
Either way, if she was a gf then it shows Tom is a terrible boyfriend.