The pub chain's success is largely down to its approach to its supply chain. Rather than be beholden to breweries, Wetherspoons has its own taps and distribution network so it can keep its prices down. This tactic is inspired by Martin's hero, Walmart founder Sam Walton (pictured in his college years), whose 10 rules for business, such as 'Listen to everyone in your company' and not to 'be beholden to... supply chain', Martin tries to follow to the letter.

Discover more about Walton's tactics in Meet the Waltons: the family story behind Walmart's staggering success

Wetherspoons' Tim Martin's incredible success story