Adoboli, already accused of fraud amounting to more than $1.5 billion, has now also been charged with fraud dating between October 2008 and December 2010, which prosecutors said related to “reckless and inappropriate” trades.

Wearing a grey suit, the 31-year-old bowed to the public gallery when he entered a packed courtroom at the City of London magistrates court.

Adoboli acknowledged several acquaintances in the public gallery and spoke in a confident voice to confirm his name and address, but made no other statement.

Lawyer Patrick Gibbs said Adoboli was “sorry beyond words for what had happened.” He did not enter a plea and was remanded in custody until a further hearing next month.

“He stands now appalled at the scale of the consequences of his disastrous miscalculations,” Gibbs said.

Adoboli, the British-educated son of a retired United Nations official from Ghana, was arrested last week.

The case has prompted criticism of the bank’s control mechanism and its business model embracing wealth management and investment banking.