One man is wanted after he was charged with sexually touching a female on the route 207 bus in Hayes in 2015.
Manohar Singh, 28, of no fixed address, was arrested on June 9 last year at a bus stop in Hillingdon after the incident on November 5, 2015.
Singh, who is known to frequent Hillingdon and Ealing, was charged with sexually touching a female and was bailed to Ealing Magistrates' Court on July 8 last year, but failed to appear.
Fabian Downie, 46, of no fixed address, is also wanted after he was charged with sexually touching a woman on the route 36 bus to Victoria on November 12 last year.
He is also wanted on recall to prison for breaching probation and release conditions.
Police released an image of Wilson Figueroa, 50, of no fixed address but known to frequent Greenwich, Southwark and central London.
He was arrested on October 29, 2015 in Fennel Street, Greenwich after an incident where a teenage girl was sexually assaulted on a route 53 bus in Woolwich on September 1, 2015.
He failed to appear after being charged with sexually touching a female and bailed to Bexley Magistrates’ Court on December 1, 2015.
Salih Simer Akin, 31, of Church Street, Enfield was arrested on October 5, 2016 after an incident in which a 12-year-old girl was sexually assaulted on a route W8 bus in Church Street, Enfield.
Akin was charged with sexually touching a child under 13 and was bailed to Wood Green Crown Court on March 6, but failed to appear.
He was found guilty in his absence.
Anyone with information on their whereabouts is asked to contact police on 020 7232 7492 or at RTPC-FU@met.pnn.police.uk or Crimestoppers anonymously on 0800 555 111.
Alternatively the police can be contacted via Twitter using @MetCC with any information.
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