British Transport Police have released a CCTV image of a man they want to trace after indecent images were taken of women on a train.
A 46-year-old woman from Maidenhead claimed a man used his mobile phone to film up her skirt between Southall and Slough on Tuesday last week.
After moving seats she saw him to do the same to two other female passengers on the 4.12pm First Great Western Service from Paddington to Maidenhead.
Investigating officer DC Chris Church said: "So far the other two women have not come forward. We believe they were not aware of the man’s actions, and I would very much like to speak to them."
One is believed to have been wearing a grey woollen beret and left the train at Burnham, while the other was blonde and left at Twyford.
DC Church added: "I would also like to hear from anyone who may have seen the same man acting in a similar manner perhaps in another location.
"This type of behaviour is extremely unpleasant, intrusive, and totally unacceptable. Thankfully incidents of this nature are rare, but they have no place on the rail network and I am determined to catch the person responsible."
Anyone with information should contact British Transport Police on 0800 405040, quoting reference B4/LNA of 30/11/2011, or Crimestoppers on 0800 555111.
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