Incorporating National Tyre Service Ltd (trading as National Tyres and Autocare and National Fleet) the country's largest ind ... ependent tyre and autocare retailer; Stepgrades Motor Accessories Ltd (trading as Viking Wholesale Tyres), one of the UK's largest tyre wholesalers and Constant Price Monitor Ltd (trading as Tyre Shopper) the leading online tyre e-commerce site. With a combined turnover in excess of £150m, National, Tyre Shopper and Viking provide products and services to Retail Consumers, Fleet Companies and Trade Channels read more