(16 Sep 2015, 6:11 pm)Jimmi wrote I think it was part of scheme between Arriva and Connect Tees Valley, something to do with the services that went down North Road in Darlington, the Darts, Pulsars and a few other buses based at Darlington at the time got them. I remember getting a leaflet saying "Love the Bus" with a heart on it and info about North Road services. I think it mainly went on the 7, 8/8A with the buses getting air fresheners.If anyone is wondering what the "heart" is, see the linked photo below, look next to the lights.
https://flic.kr/p/sTuJoH