MORE than 12,000 private shareholders today launched a potential £4billion claim against Royal Bank of Scotland and former bosses over its 2008 share issue.

The RBOS Shareholder Action Group claims the directors misled investors, missed out vital information and misrepresented RBS’s underlying strength during the lender’s 2008 rights issue.

The group has launched proceedings against former chief executive Fred Goodwin, three other directors and the bank itself.

A spokesman for the action group said: “Today represents a giant step forward for the many thousands of ordinary people who lost money as the result of inexcusable actions taken by banks and their directors in the financial crisis.

“Now, for the first time, some of these directors will have to answer for their actions in a British court.”

The group said its claim was lodged with the taxpayer-payer backed bank and in London’s High Court today. It includes the claims of more than 100 institutional investors who lost money in its 2008 fundraising, as well as thousands of small shareholders.

RBS launched a £12billion rights issue in 2008 to shore up its balance sheet after its disastrous acquisition of Dutch bank ABN Amro, but just months later it was part-nationalised in a £45billion Government bailout.

Alongside Mr Goodwin, the group is also starting proceedings against former RBS chairman Tom McKillop, former investment bank boss Johnny Cameron and ex-finance director Guy Whittaker.

The claim is the second in recent days to be lodged against RBS after a group of 21 claimants launched a multimillion-pound lawsuit last week, also over its 2008 cash call.

The RBOS claim alleges the bank’s directors “sought to mislead shareholders by misrepresenting the underlying strength of the bank and omitting critical information from the 2008 rights issue prospectus”.

As a result, it argues the 81%-state-owned bank is liable for losses sustained by investors who participated.

RBS declined to comment.