"Ndrangheta interests in the UK have figured prominently as clans have used the country as an investment and money-laundering base," says Nicola Gratteri, the prosecutor whose investigation has culminated in the maxi-trial.
The ’Ndrangheta – based in the southern region of Calabria, the toe of the Italian boot – is reputed to be one of the richest and most feared criminal organisations in the world. A study by the Demoskopita Research Institute in 2013 estimated its financial strength as more than that of Deutsche Bank and McDonald’s combined, with an annual turnover of €53bn (£44bn).
Investigators say the secret of its success lies in its ability to connect the underworld with the upper world, where often the “upper world” stands for London. In the last decade, hundreds of investigations have asserted how the ’Ndrangheta has laundered billions of euros in the City.

UK to come under scrutiny in Italy’s largest mafia trial in decades
Witnesses will be asked to respond to claims the ’Ndrangheta has laundered billions of euros in City of London