The Board will elect a Chair. This person may have some special powers granted under the Articles, typically a casting vote in the event of a deadlock.
The Chair’s role is to ensure that the Board is balanced, well informed and runs effectively, making clear decisions in possession of all of the facts, and with appropriate discussion and challenge.
The Chair is often seen as ultimately responsible for the Company, but the Directors should never consider that this absolves them of any responsibility. Directors all have the same responsibility for the Company, whether or not they agree with the decisions made by the Board as a whole.