Ardan International has retained its B rating (strong) for financial strength by consultants AKG.
AKG also awarded Ardan an extra star for service this year, meaning it now has the maximum of five stars.
All of this means Ardan - which is owned by International Financial Group Limited (IFGL) - has the highest rating of any international platform reviewed by AKG.
The report said the launch of Ardan's new platform in 2020 has been key in its success and that "the perception of service is now very good".
"Ardan International has experienced advisers moving back onto the platform referencing both the service and the offering as key parts of this decision," the report said. "Service levels continued to be met and feedback on service from advisers is reported as "excellent'. Alignment with IFGL is also positive here, with consistent levels of service provided throughout."
Ardan's head of operations Richard Gerrard said: ‘Following the launch of the new platform in 2020, the focus on service and continuous development of our offering have been key objectives. This five star award for service is a fantastic achievement by the team and recognition that, within the international platform sector, Ardan is consistently delivering superior service levels.'