The three lions, as far as I'm aware are actually leopards. I think heraldically they've always been leopards, and they just wouldn't fit in the football song: 'Three leopards on the shirt...' The single lion is Scotland, and the Harp Ireland. For some reason Wales is not represented (unless it has a Welsh plant in the border). The smaller coat of arms in the middle is that of the Duchy of Brunswick and Luneburg (later renamed Hanover).