Thompson, who intends to launch a small claims case against Sir Fred, nicknamed "Fred the Shred" after his aggressive cost cutting, decided to take action following the banker's refusal to hand back any of his £693,000-a-year pension, which was dubbed a "reward for failure" after the government was forced to bail out the troubled bank.
Thompson told PrintWeek: "It's been reported widely that Sir Fred Goodwin was one of the key people responsible for the downfall of RBS, which subsequently forced the government to put taxpayers money in.
"I'd like to make an argument that some of that money is my money and I never intended it to prop up banks – that's not the spirit of being a taxpayer – so I'm holding him responsible and I want some of that money back, which I'll give to charity."
The government is set to increase its stake in RBS to as much as 95% after RBS posted Britain's biggest ever corporate loss of £24.1bn last week and announced that it will ring-fence £325bn of risky assets into a government insurance scheme.
Thompson, who was dubbed "the people's champion" by Scotland's Sunday Mail for his action, said he hoped the symbolic nature of his claim would provoke Sir Fred to rethink his position.
He added that he would drop the case if Sir Fred surrendered his RBS pension.
Harrison Scott boss in legal bid to recover tax from Sir Fred Goodwin
George Thompson, joint managing director of print recruitment business Harrison Scott, has said he will sue shamed former Royal Bank of Scotland chief executive Sir Fred Goodwin for his share of public money used to save the bank, as anger grows over his pension.
