Ulster Unionist Party Leader Robin Swann MLA said:
“London has been hit hard by tragedy and terror in the past number of weeks and our thoughts and prayers are with those targeted in this latest attack.
“Targeting those who were attending prayers during Ramadan is wicked and we must stand against those who seek to plunge society into a vicious cycle of violence.
“I also pay tribute to the emergency services who have shown immense bravery and service to the public under the pressure of the last number of weeks.
“Extremism in all its shapes and forms must be removed from society. It is vital that we give our support to the intelligence and security services to help them in preventing these elements from bringing further devastation.”