Atlas Mara Co-Nvest, an Africa-focused acquisition firm created by former Barclays boss Bob Diamond, said it has raised $325 million and will start conditional dealings on the London Stock Exchange on Tuesday.

The American banker has partnered with Ashish Thakkar, the 32-year old chief executive of Mara Group Holdings, a $1 billion conglomerate with business in 19 African countries, to form Atlas Mara.