Aviva is simplifying its organisation by removing the regional layer of its management structure.

This is due to Aviva now operating in ‘materially fewer countries’ than before.

The chief executives of Aviva’s three largest businesses will now be joining the Group Executive Committee, subject to regulatory approval.

This will be David Barral, chief executive of UK & Ireland life insurance, David McMillan, chief executive of UK & Ireland general insurance and Philippe Maso, chief executive of Aviva France. They will all report directly to group chief executive Andrew Moss.

Trevor Matthews will become executive director of developed markets. Within this role he will chair the UK & Ireland board and be directly responsible for Canada, Italy and Spain.

Aviva hopes the new structure will result in shorter and more direct reporting lines from individual countries to members of the GEC.

Leaving the firm will be director Igal Mayer, chief executive of North America Richard Hoskins and Alain Dromer, chief executive of Aviva Investors.

Pat Regan, currently group chief financial officer will take over responsibility for Aviva Investors as well as his current role.

Mr Moss said: “The changes I am announcing today will result in a simpler and more efficient organisation which will deliver further operational benefits, accelerate delivery of our strategy and provide opportunities for profitable growth.”