David Videcette, who was a lead detective on the 7/7 London bombings investigation, posted a series of tweets concluding that the covert camera was concealed in a smoke detector .
Three Tory MPs call for cheating Matt Hancock to quit in growing backbench rebellion after ally who was due to defend him failed to turn up for interview and protesters demand his ARREST - while toe-curling 60-second video of office kiss emerges
Matt Hancock, 42, is accused of having an affair with lobbyist Gina Coladangelo, wife of Oliver Bonas founder
Duncan Baker became the first Conservative MP to go against the Prime Minister who backed Mr Hancock
Mr Baker, MP for North Norfolk, said the Health Secretary has fallen short of appropriate morals and ethics
Now, former Work and Pensions Secretary and MP for Tatton Esther McVey urged Hancock to step down too
Matt Hancock and lover Gina Coladangelo are pictured at launch of student radio station dailymail.co.uk - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from dailymail.co.uk Daily Mail and Mail on Sunday newspapers.
Martha Hancock, 44, has maintained a dignified silence since images, and a subsequent video, were released showing her husband kissing his married aide Gina Coladangelo.