Footage of the incident shows the group of women arguing with the transgender pair inside the female toilets as a member of security attempts to resolve the situation.
A number of people can be heard telling the staff member they are 'men in the women's toilets' and saying they feel 'uncomfortable' with their presence there.
'You're a man, why are you in the women's loo? Why do you feel the need to be in here with women?' one person asks, before the security guard intervenes and urges them all to 'relax'.
The pair of transgender women eventually agree to leave to toilets before being escorted out by security, at which point one can be heard threatening to 'smack the s* out of' one of the women, before the other trans woman tells another person: 'I'll show you what a man is'
https://www.dailymail.co.uk/news/article-15456665/JK-Rowling-shows-support-awards-attendee-confronted-transgender-women-using-female-toilets.html