Posted: 28/10/2016 at 10:39
Wasn't aware that 'Great' had ever been removed - it means the island that is England, Scotland and Wales as one unit and the smaller islands that form part of the archipelago (such as the Isle of Wight, Anglesey, the Isles of Scilly, the Hebrides and the island groups of Orkney and Shetland, that are part of England, Wales, or Scotland) but excludes Northern Ireland which forms part of the island of Ireland.
Nothing to do with 'being great'.
It was turned into an advertising ploy back in the Swinging Sixties. May the heavens preserve us from that sort of jingoistic enterprise today - it would not be taken well by any of our trading partners, current or future.