The
two men boarded the service at Clapham Junction on the 27th of
August at around 4.30pm.
The
men approached the victim sitting in another section of the train.
One
of the men threatened the victim with a hammer concealed in his sleeve, and
demanded the victim hands over his watch.
After
taking the watch, the two men remained on the train and alighted when the train
arrived at Isleworth station.
Officers
believe the men in the CCTV images may have information which could help the
investigation.