Posters which aim to make commuters feel safer in the wake of the bomb attacks have gone on display on London's Tube network.
They pass on the message that there are more police patrols, search teams, random checks and police dogs on trains and at stations, than before.
London Underground (LU) said the posters also call on the public to work with them by remaining vigilant.
The poster campaign has been launched by Transport for London (TfL).
LU managing director Tim O'Toole said: "Tube services are now back to normal and we're determined to keep transport in London as safe as possible.
"We work very closely with the police, but we also need the continued support of our passengers."
The posters also passengers to be responsible for their belongings and not leave bags unattended in an attempt to prevent any more disruption.