McGill's runs bus services across Renfrewshire, East Renfrewshire, and into Glasgow, with express Clyde Flyer routes linking the city to Braehead, Inverclyde, Wemyss Bay, and Largs. Local services connect Paisley town centre, Gallowhill, and Greenock, while the network extends via group operations to Dundee and areas served by Midland Bluebird. Riders use the McGill's Buses app to buy mobile tickets, track buses in real time, check live departures, and get service updates. The operator reached 20 million zero-emission miles and earned a 97% customer satisfaction rating, topping UK bus companies.