Despite their fortune, Mohsin and Zuber Issa still live just 10 minutes from the terraced house in the area they grew up in.
Known by many as the 'billionaire brothers', their rise to success started with the purchase of a petrol forecourt in 2001, before expanding the empire across Lancashire.
Now, the brothers own supermarket giant Asda and fast-food chain Leon. They are the faces behind the EG Euro Garages chain, and are reported to have their sights set on Caffè Nero.
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Their self-made fortune has earned them the nickname of the 'billionaire brothers,' but it's a name Mohsin, 49, and Zuber, 48, are not particularly fond of - it's been revealed.
In a rare interview, Asma Issa, wife of Zuber, said "they are very different characters," Lancs Live reports. She said: "Zuber is someone who is very easily approachable. He's kinder. Moshin is very work-orientated.
The brothers grew up in Blackburn, and their parents Vali and Zubeda initially worked in the textile industry when they moved to the UK from India, before their father bought a petrol station.
"They actually hate being dubbed the billionaire brothers," Asma added. "They try to avoid the media as much as possible. My father-in-law was initially in the rag trade.
"Then he went on to the building trade for a few years and eventually ended up buying a petrol station when the boys were a bit older. The boys used to help out during their teen years. That is where the passion for petrol stations came in."
Their first venture was buying a petrol forecourt in Bury in 2001 before expanding across East Lancashire and creating Euro Garages.
Speaking to BBC Radio 4’s 'Profile’ show, Mrs Issa said her husband told her he had bought the derelict site when they returned from an exotic holiday.
She added: "I don’t know what he saw in the petrol industry. We had only been married a couple of years. We were actually on our way back from holiday in Malaysia and he stopped off in Bury to see this site and then in the car he told me that 'I have just bought this.'
"Every Saturday Zuber would visit all the sites. It was fun. A few years down the line when it got to the stage when Zuber couldn’t handle everything he approached his brothers and said one of you come and give me a hand. That’s when Mohsin came in."
The brothers built their business empire on the back of a successful formula of a convenience store at the petrol station. Last week they added the fast-food chain, Leon, to their portfolio. And now they’re rumoured to have their eye on Café Nero.
But Mrs Issa revealed the pair were not the most academically gifted at school. She added: "In terms of grades I don’t think he did really well. He was really interested in retail and I think when he was about 17 or 18 an opportunity went up for him to buy a newsagent in Preston. Which he ran from the age of 18."
The couple tied the knot in 1998 after an arranged marriage. They had both been to the same primary school but had never met.
Mrs Issa, a mother-of-four, added: "We got introduced through our parents. It was not exactly love at first sight but he did dazzle me literally at the first meeting."
Ilyas Munshi, commercial director of EG Group, told the programme he was asked to speak at the boys old school and met Mohsin’s old head teacher. Mr Munshi said: "With a chuckle she said to me – well his attendance was very poor.
"I looked at some of his reports and academically he needed to do a lot better. I mentioned this to Mohsin and he said 'I remember those days – the teacher would always say Mohsin, I don’t know what is going to become of you.'"
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