This is a companion question to Why is Brexit bad for British science? Judging from the responses to that question, a significant number of academics are unhappy with Brexit and are not intending to stay in the country for the long term. The implication is that it's become easier to get a British academic position, since there are fewer people interested. Is this borne out in actual data? I'm particularly interested in whether the number of applicants for faculty positions / postdocs dropped, and if so by how much.
The closest thing I've seen to this is Royal Society president Venkatraman Ramakrishnan saying they have anecdotal evidence of people not wanting to come / wanting to leave, but no statistical evidence. It seems to me it should be possible to get that statistical evidence, e.g. universities probably keep a record of applicants for each position, so if there's a change in number after 2016 it should be noticeable. There was no drop in international student applications, but it's not obvious if that also applies to faculty positions.