This leaflet is obviousley the information for the Little Gem service when it started up in Ashton.
These buses arrived in Greater Manchester in the late 80s and promoted a frequent service connecting estates with town centres and went where the bigger buses had never been before.
I remember the O service around Oldham but this one is the A2 and A3 services which ran around the Tameside area. Don't remember seeing any MCW minibuses like the one on the picture. I think they had Ivecos at Tameside depot.