Former Petrosaudi International executive Xavier Justo has lodged a criminal report with Scotland Yard against "a few" UK companies and individuals allegedly involved in the Petrosaudi-1MDB deal.

"The fight is not over yet, we will chase them all, from the top to the bottom. Their crimes will not be forgotten or forgiven, never!" he posted on Facebook today.

One of the UK firms believed to be involved in the scandalous deal is the Royal Bank of Scotland (RBS).

The bank was previously the owner of Coutts & Co Ltd, where Good Star Ltd - a company allegedly controlled by 1MDB-linked businessperson Jho Low - has an account.

In 2009, Good Star is believed to have received US$700 million misappropriated from 1MDB's joint venture project with Petrosaudi International.

Another British entity involved in the 1MDB scandal is Standard Chartered, which had handled the transactions of US$1.1 billion allegedly misappropriated from 1MDB to a businessperson in Singapore.

The Monetary Authority of Singapore had in 2015 fined Standard Chartered Bank and Coutts & Co Ltd SG$5.2 million and SG$2.4 million respectively for 1MDB-related offences.

RBS sold Coutts & Co Ltd in 2015.

Justo lodged the report together with his wife Laura, who was photographed with him outside New Scotland Yard's London headquarters.

"We fight as a family because we suffered as a family! We will rest when these crooks will be arrested, not before," he added.