Which of the following structures would you recommend for the Board of Directors of a UK...

The Board of Directors should have a minimum of six directors with the Board's tasks divided amongst them. The Board should also have a Chairman or Chairwoman who may serve as the Chief Executive if time permits.

The Board should have no more than six members with clearly defined executive and non-executive responsibilities. To make the role more efficient Chairman or Chairwoman of the Board should also be the Chief Executive.

There should be no restriction placed on the minimum or maximum number of Directors. The Directors' roles should be shared but the Chairman or Chairwoman should not act also as the Chief Executive.

The Chairman or Chairwoman should not have an executive role within the company. There should be at least two directors to carry out the Board's roles.