Examples of notable British companies that have an Irish operations come as diverse as the supermarket chain Tesco (Tesco Ireland), the department store Marks & Spencer, the commercial bank NatWest Group, which operates through its Ulster Bank subsidiary, telecoms company BT (BT Ireland) and electric company SSE plc (Airtricity). Notable Irish companies that work in the UK includes the airline Ryanair, fashion retailer Primark (founded in Dublin but now owned by Associated British Foods), food processor Kerry Group and electric management company ESB.