Sergeant Joseph McIlvenny, PC Martin Borg, and PC Phillip Neilson were sacked after details of their behaviour at Charing Cross police station were revealed in a BBC Panorama broadcast on Wednesday, October 1.
The officers, who are attached to the Met Detention and Central West Command Unit, faced a fast-track misconduct hearing on Thursday, October 23.
Allegations against all three were proven, including breaches of the standards of professional behaviour for authority, respect and courtesy, discreditable conduct, and equality and diversity.
They were dismissed without notice and will be added to the Barred List held by the College of Policing, preventing them from rejoining the police or being employed by other related bodies.
The BBC Panorama broadcast showed Sgt McIlvenny trivialising and mocking the account of a rape victim in conversation with another officer.
He was also seen advising a member of staff not to speak about the use of force in front of custody suite cameras, making misogynistic and inappropriate comments about a female detainee, and making grossly offensive remarks about a woman he encountered.
All allegations against him were proven.
PC Borg was shown making rude and Islamophobic comments about detainees and members of the public.
He said he joined the police “to nick people and get into scraps” and gloated and laughed about seeing another officer, a sergeant, using excess force and injuring a detainee.
Three of eight matters against PC Borg, relating to alleged discriminatory comments, were not proven as breaches of standards of professional behaviour.
The hearing heard PC Neilson made highly derogatory and discriminatory comments about a number of people from different races and cultures.
He talked about deliberately trying to harm a young detainee who “deserved it”.
All allegations against him were proven.
Further accelerated misconduct hearings for five serving officers and a former officer will be held on Friday, October 24, and Tuesday, October 28.
The IOPC investigation continues.
Commander Simon Messinger, Professionalism, said: “Following the shocking and appalling behaviour shown on Panorama we were extremely clear where there was incontrovertible evidence we would hold misconduct hearings at the very earliest opportunity.
“It has seen three officers dismissed today for their disgraceful conduct.
“We have kept to our word and are grateful to the Independent Office for Police Conduct for their swift enquiries and decision-making that meant hearings could start today. More will be held over the next week.
“We have since replaced the custody team at Charing Cross, made changes to local leadership and wider work continues to identify any other areas of concern in detention teams across the Met.
“We are unrelenting in our drive to achieve the highest of standards across the Met.”