The Duchess of Cornwall took to the trading floor as part of a charity trading day at City broker ICAP.
Camilla rolled up her sleeves to close multimillion-pound deals whose proceeds will go to 200 charities across the world.
Brokers wearing pirate fancy dress applauded as she confirmed a £50million deal between Morgan Stanley and Danish bank Danske at ICAP’s central European desk.
Emerging markets broker Duncan Fotheringham, 42, said she had done “brilliantly” and that her Danske counterpart was “beside himself with joy”. He said: “We lined it up and she closed it with a certain degree of aplomb.
“She seemed to be having a laugh and a joke, as well as getting on absolutely superb.”
Watched through a live video feed by colleagues in Warsaw, the duchess quizzed the dealer in Copenhagen on the price of interest rate contracts in Hungarian forints before reporting back to the desk. An ICAP broker then checked the price with his buyer and confirmed the deal, allowing Camilla to close it by revealing their name to the dealer. Her route was lined by workers dressed as flappers, hippies, nuns, beefeaters, gangsters, grim reapers and two clanking Roman legionaries.
Since 1993, the company has raised more than £100 million.
Luke Pledger, 45, managing director at ICAP’s WCLK division, said: “She did very well – it was a perfect execution.”
Richard Mason, 39, who guided the Duchess through an earlier deal at the US dollar swaps desk, said she had been “very nervous”, but soon warmed to her role.