Oval has extended its presence in the South West with the acquisition of Bristol-based Torribles Insurance.
Torribles specialises in large-scale events such as fireworks displays and rock concerts. It controls annual gross written premiums of £9m.
The acquisition follows Oval's purchase of John Eke & Partners in October last year.
Oval chief executive Phillip Hodson said: "This acquisition is very good news for the whole group. It helps us extend our reach in the South West of the country, and it turns our special risks offer into an even more diverse one."
In addition to event insurance, Torribles also specialises in insuring TV and film productions. It has arranged insurance for Aardman Animations - the production company behind Wallace & Gromit and Chicken Run and the Robbie Williams tour.
The broker is also looking to develop its client base in Spain and France.