Granville Technology Group Ltd was a British computer retailer and manufacturer based in Simonstone, near Burnley, Lancashire, marketing its products under the brand names Time, Tiny, Colossus, and MJN.It sold mainly through mail-order, though late in its life, the firm added a chain of shops in the United Kingdom that traded as The Computer Shop, and rapidly grew to over 300 stores. The main competitors were PC World, Comet, and Maplin.