Chief Superintendent John O’Hare said: “Over the past five days Manchester City Centre has played host to the Conservative Party Conference which saw more than 12,000 delegates visit our city.
“This is a complex and challenging security and public order operation which requires a high degree of partnership activity and the highest levels of professionalism throughout.
“As is the norm, there have been elements of protest throughout the conference period - 30,000 people marched through the city on Sunday alone.
“The vast majority of people attending protests did so in the spirit of their causes, worked with us to make sure they could voice their opinions in a safe manner and with minimal disruption to others.
“On the occasions where individuals crossed the line we have taken positive action and 11 people have been arrested as a result of unacceptable behaviour over the past few days.
“Throughout this operation officers have worked tirelessly to protect delegates, facilitate the protests, and keep our city safe.
“I am proud of all our officers and staff. They have all performed their duties to the highest of standards and acted in a professional and fair manner throughout.
“I also want to thank everyone who lives in, works in or was visiting the city centre while this operation has been taking place for their patience, support and co-operation.”