
The organisation has sent out a tender to agencies inviting them to compete for the business. Requests to participate are required to be submitted by 22 March.
Media planning and buying is handled by the WPP-owned Mediaedge:cia and comprises on- and off-line media. The online advertising business includes display advertising and paid search activity.
The tender also states that the brief may include requirements from the Olympic Delivery Authority in the run-up to the London 2012 Olympics.
The contract covers advertising for the Underground, buses, congestion charging, road safety, river services, taxis and licensed cabs, Victoria Coach Station and road traffic enforcement.