Starbucks is seeking to reassure customers after a camera used for "voyeurism" was found concealed in the customer toilet of its Vauxhall coffee shop.
The device was spotted hidden in the toilet's ceiling by a member of the public on November 22 last year.
Police attended the incident and seized the camera, which they believe had been used for "voyeurism" purposes.
Officers think the camera had been filming customers using the toilet for up to four weeks.
An appeal to find a man wanted in connection with installing the camera was launched a year later on Wednesday (November 22).
A Starbucks UK spokesman said: "We take our responsibility to provide a safe environment very seriously.
"These incidents are rare and we would like to reassure our customers that we conduct regular checks on our in-store facilities.
"We continue to support the police with their ongoing investigation."
No arrests have been made in connection with the incident and a police investigation into what happened is ongoing.
Police have released an image of the man wanted in connection with installing the camera and are urging anyone that recognises him to come forward.
When asked about the year-long gap between the camera being found and a police appeal being launched, a Metropolitan Police spokesman said: "The investigation involved time-consuming submissions of the device to the lab, for forensics and then for a full download of the device.
"The investigation also involved other enquiries into who the suspect might be which were carried out before an appeal to the public was considered."
Anyone with information about the man in the picture is asked to call Brixton CID on 02086492134 or Crimestoppers anonymously on 0800 555 111. You can also tweet information to police via @MetCC.
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