Glasgow family firm to open pizza restaurant in Edinburgh St James Quarter | Scottish energy giant exits North Sea Business Week Glasgow family firm to open pizza restaurant in Edinburgh St James Quarter | Scottish energy giant exits North Sea | Edinburgh oil firm wins $1bn tax case Scottish energy giant SSE this week agreed to sell its North Sea gas business to acquisitive Viaro Energy for £120 million amid the shake-up in the area. The deal will allow London-based Viaro to acquire stakes in a range of big North Sea assets including the giant Laggan Tormore development West of Shetland.