Met Police Assistant Commissioner Nick Ephgrave has said it's "shocking and deeply disturbing' that a serving police officer has been arrested in connection with the disappearance of Sarah Everard.
Ms Everard, 33, was last seen in Clapham at about 21:30 GMT on 3 March.
The Met said officers had visited 750 homes in the area as part of the investigation and the force had received more than 120 phone calls from the public.
There is only one boss. The customer. And he can fire everybody in the company from the chairman on down, simply by spending his money somewhere else.