I started getting Buster late 1975/early 1976, when Jackpot comic merged with it. I remember Faceache, who could contort his face into grotesque shapes-he called it 'scrunging'-and The Leopard of Lime Street, which was Spiderman with a younger English lad, who had leopard-like powers.
I think it had a strip with a boy who looks after shipwrecked humanoid aliens, who were only a few inches high, in his bedroom. I can't recall what that story was called, though.
ETA, just found out the last strip was Pete's Pocket Army (see link).