In the late 1970s , the largest International Stores were rebranded as ' Big I ' and finally as Mainstop although the Torquay branch was rebranded as Supernational .
Mainstop was originally part of International Stores , itself a subsidiary of British American Tobacco .
In the late 1970s , the largest subsidiary   were rebranded as ' Big I ' and finally as Mainstop although the Torquay branch was rebranded as Supernational .
Mainstop was originally part of International Stores , itself a subsidiary of British American Tobacco .