M&Co. is a Scottish online retailer and former high street chain store selling women's, men's, and children's clothes, as well as small homeware products. Its head office is in Inchinnan, Scotland, though its main buying office is in Mayfair, London.[2][3] Previously, its head office was at Caledonia House in Paisley.[4] The company previously operated as Mackays Stores Limited until its 2020 administration, previously trading as Mackays.
Established in 1834 as pawnbrokers, Mackays switched to selling clothes in 1953 by brothers Len and Iain McGeoch. In 2005 the company rebranded as M&Co. to reflect a more modern image.[5] The chain operates over 300 stores and also has an online presence.[6] In 2023, it was announced that Yours Clothing Group had acquired the company.