British insurer Aviva said it will merge its UK life and general insurance businesses as it focuses on offering products online, in an organisational shake-up that also saw the departure of its European chief. 

Andy Briggs, head of Aviva's UK life business, will take on general and health insurance to become the chief executive of the UK Insurance business, Aviva said in a statement. 

Briggs was formerly chief executive of Friends Life, which Aviva acquired in 2015. 

Maurice Tulloch will become CEO of International Insurance, responsible for the firm's operations in France, Canada, Ireland, Spain, Italy, Poland, Turkey and India. 

Aviva has been pulling out of some international markets in recent years. 

As a result of the changes, David McMillan, chairman Aviva Global Health Insurance and CEO Aviva Europe, has chosen to leave the firm, Aviva added. 

Aviva, which is unusual among UK listed insurers in having large operations in both life and general insurance such as home and motor, is focusing more on its digital business, offering a range of life and general insurance products online. 

"We see significant opportunities to differentiate our business in the UK post-Brexit," group chief executive Mark Wilson said in a statement. 

"Our priorities are to continue to deepen our position in our home UK market...and to continue to grow in our core international markets," he added.