In March, Britain agreed to drop Gono from the European Union sanctions list, meaning that he is now free to visit the UK and hold assets there. Hoey added: "The UK should now ensure that he is put back on the sanctions list."
During almost a decade as Zimbabwe's central banker, Gono has presided over hyperinflation, the demise of the national currency and a desperate shortage of basic essentials, notably petrol.
Gono, who blamed "illegal sanctions" imposed by the West, became the crucial deal-maker charged with ensuring the survival of Mugabe's regime, negotiating with private companies to raise funds for vital imports.
One such was Ravenscourt Corporation, which sold fuel to the Reserve Bank as part of a joint venture in 2006-07.
At the same time that Ravenscourt and its partners were supplying the Reserve Bank with almost 5 per cent of Zimbabwe's annual fuel consumption, the company was paying money into the accounts of Gono's children, according to bank statements obtained by Global Witness, a campaign group.
In particular, Ravenscourt paid US$20,000 to Gono's twin daughters, Pride and Praise, and the same amount to his son, Passion, on May 30, 2006. The money was transferred to their bank accounts in Australia, where they were students at the time.
Later, on August 21, 2006, Ravenscourt sent another US$40,000 each to the accounts of Passion and Praise Gono, and US$20,000 to Pride Gono.