Shabana Mahmood: “The police are pursuing multiple lines of enquiry to establish the motivation for this attack. I will be updating the…”

I would not hesitate to impose further measures on other countries refusing to co-operate.

An attack on any individual in public life is an attack on every one of us, and it is an attack on democracy itself.

Robust debate and criticism are part of this job - threats, abuse and violence are not.

I can therefore announce today that I will expand, with immediate effect, police support to political figures who are not currently members of parliament.