The woman they're trying to protect is one Adelina Zhang. People are speculating she's a honeypot for British pols, much like Fang Fang was with Swalwell. She's had extensive plastic surgery.
The other is MengYing Lu
who is most likely the conduit for moving rich Chinese into British academia.
They're all spies.
The yelling dude is this guy:
who is probably getting Chinese 'teachers' into schools, to again, spread the good word about tyranny.