An honorary doctorate from Anglia Ruskin made it four degrees on his CV.
Surely Booth could retire now, perhaps to pursue his other great interest, music.
He is the chairman of the Britten Sinfonia and plays the classical double bass — “the coolest instrument” in his view.
He sports a neat goatee beard so I wonder if jazz influences are responsible for that choice of instrument — perhaps a wayward youth listening to Charles Mingus?
No, he remains relentlessly highbrow. At school, he was listening to and singing Handel and Brahms.
His passion is the English choral tradition, as well as Wagner and Strauss: “For me, it’s just one of those things that absorbs my attention completely, I’m not distracted, I’m just in that blissful zone.”
But that distraction can only be temporary. The developed world’s stubborn inability to comprehend the importance of emerging nations continues to drive him on.
He explains: “They are now 85% of the world’s humanity. We have a world in which new middle-class consumers may increase by three billion. We’re talking about huge developments over the next 20 years which most people are totally unaware of.
“I was on television recently and someone asked me about ‘the emerging markets region’. I wanted to scream at them ‘look at a map!’. India is a place of 1.25 billion people in one country.
“The reason why WhatsApp was bought by Facebook for $19 billion [£12.3 billion] wasn’t for revenue; it was because it has the potential to be the access platform for many people, and the same is true of Nimbuzz.
Land of opportunity: India (Picture: AP)
Tsering Topgyal/AP
“But Nimbuzz has an advantage in that it is intrinsically Indian. It fits on your non-smartphone without taking up all the memory space, the branding is more comfortable for an emerging-market audience… a lot of bigger international companies have tried to establish their own brands, just in different geographies, and it hasn’t really worked.”
Booth adds: “I made a lot of money in Ashmore. I’m very lucky and privileged to do that, and I feel you should use that money wisely.
“It’s a responsibility, and that’s my motive, including with Exaro. It’s about trying to get that money working for the benefit of people in a sensible way. So if I can catalyse things which wouldn’t otherwise happen, then I’m interested in doing that — whether they make money or not.’
That still-furious passion to solve the world’s biggest problems is going to keep him from his bass-playing a little while longer.