
The contract is thought to be worth around £5m and includes all advertising across overground station platforms as well as on trains. It will run from 1 July for four years.
Concourse Initiatives, the outdoor media sales division of Media Initiatives Group, won the experiential contract for the network and KBH is understood to have retained the contract to sell ads on London Overground trains.
The London Overground network includes train lines that travel between Richmond to Stratford, Clapham Junction to Willesden Junction, Gospel Oak to Barking and Watford Junction to Euston.