An attack on Westminster is an attack against liberty and democracy themselves.

It concerns us all.

Our thoughts are with the families of PC Keith Palmer and the others who were so cruelly and randomly murdered. We pray for the swift healing of all who were injured.

We must never take for granted the bravery of the police and the skill and care of the emergency services, who responded with such courage.

Such cruel and violent attacks, which have taken place in such vile ways in many of the capitals of Europe, must not undermine our commitment to life, freedom and the values of humanity and compassion.

Jonathan Wittenberg