Re the sex of Dr Upton and whether that might need to be a fact to be found, I had thought that it was an agreed fact that he was legally and biologically male, but I might be wrong on that.
I think the judge may well specifically ask if this is something the sides agree on or not.
It will put JR in quite a difficult position, I would have thought, if she has to say 'I am instructed that my client is a biological female'.
And potentially R1 and R2 may disagree on whether he is or not.