Dame Alison resigned last month, abruptly ending her four-year tenure, amid government pressure on her position.

It followed her admission that she had discussed the former UKIP party leader's bank details with a BBC journalist as Mr Farage complained he was being frozen out of the banking system for his political views.

She suggested his account at the bank's Coutts division had been closed only for commercial, rather than any political, reasons.

But Mr Farage said a subject access request from the NatWest Group had declared his account was "commercially viable" and the dossier showed he was ditched because his political beliefs did not align with the lender's own.

Her subsequent resignation also followed criticism that she had broken the so-called first rule of banking - client confidentiality.

The bank said on Wednesday that Dame Alison was seeing out her 12 month notice period as per her contract and insisted that no final decisions had been made in connection with that or with her award levels.

But it confirmed that she was potentially in line to receive £1.155m in salary for the year, £1.155m in NatWest shares and pension payments of £115,566.

The share awards are due to vest over a five-year period, the group added.

The board was yet to decide if it would attempt to claw back past bonus awards related to her performance and said that the issue would form part of its review process.

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The statement said: "Ms Rose's notice period and the payments she will continue to receive for the notice period will be reviewed on a continuing basis, having regard to the internal and external investigations relating to the account closure arrangements at Coutts and associated events.

"Decisions on these awards, along with any decisions regarding other remuneration matters, will be made taking into account the findings of the investigations, as appropriate."

A spokesperson added: "Like other employees where an investigation outcome is pending, Alison is currently receiving her fixed pay.

"This in line with her contractual notice period and remains under continual review, as the independent investigation continues.

"As previously confirmed, no decision on her remuneration will be taken until the relevant investigations are complete."

Mr Farage gave his reaction on X, the platform formerly known as Twitter, writing: "The £2.4m payout to Dame Alison Rose is a sick joke.

"This is the corrupt British establishment looking after its own."

His words were accompanied by remarks in a video in which he claimed the bank's inquiry had been "kicked into the long grass" and that she was effectively being rewarded for lying to the BBC.

"Any employee of NatWest that had done what she'd done would have been out the door, fired, and would not even have received their month's money," he argued.

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He had called for the bank's entire board to go after Dame Alison quit but it is believed that such a move would not have been allowed by financial regulators in any event.

Such a drastic step would have risked turmoil at the lender, which remains part-owned by the taxpayer following its financial crisis-era bailout.

Chairman Sir Howard Davies, who was already due to step down next year, told investors there was intense political pressure behind Dame Alison's decision to quit.

Treasury minister Andrew Griffith said at the time: "This would never have happened if NatWest had not taken it upon itself to withdraw a bank account due to someone's lawful political views. That was and is always unacceptable."