Aon and Royal & SunAlliance (R&SA) are sponsoring the Vintage Sports Car Club's 'British Empire Vintage and Historic Race Weekend'.
The insurers are said to be sponsoring the event to show their support for classic car motorists.
An Aon spokesperson commented: "As long-standing players in the vintage, classic and historic insurance world we wish to give something back to the people that have supported us over the years.
The event will take place on 8 - 9 June.