British soldiers served alongside other countries' forces in the US-led invasion that began in 2003 and led to the fall of Iraqi dictator Saddam Hussein.

Ex-lawyer Phil Shiner, 65, is facing fraud charges relating to legal aid claims made in 2007 and information provided to the Solicitors Regulation Authority in 2015, the NCA said in a statement.

He is due to appear in court in central London on Monday, it added.

British troops involved in the conflict faced accusations including rape, torture and mock executions.

A probe into the allegations in 2020 cleared thousands of soldiers and an investigation into the claims closed without a single prosecution, Defence Secretary Ben Wallace said in October.

A British tribunal struck off Shiner after finding him guilty of misconduct and dishonesty in connection with the allegations in 2017.