Which Blue Lagoon? There was one under the Hielanman's Umbrella (other side of the station from the fire) and one in the upper end of Buchanan Street (demolished 30 years ago). I thin there's a more recently established one in Partick. They were all contenders for the title of Worst Chippie On The Planet. Everything fried in under-temperature stale fat, sold to a late-night clientele too drunk to notice.