Prime Minister Theresa May said:
I commend the tireless work and extraordinary courage of the British forces and our global Coalition partners that have fought Daesh in Syria and Iraq.
The liberation of the last Daesh-held territory is a historic milestone that would not have been possible without their commitment, professionalism and courage.
But we must not lose sight of the threat Daesh poses and the Government remains committed to eradicating their poisonous ideology. We will continue to do what is necessary to protect the British people and our allies.