From The Queen's Honours List: Hugh Laurie OBE and Penelope Keith CBE

Officer of the Order of the British Empire

James Hugh Callum LAURIE Actor, Writer and Director. For services
to Drama. (London, W1W)
(OBE is two steps below a knighthood)

Commander of the Order of the British Empire

Ms Penelope Anne Constance KEITH, OBE DL Actress. For charitable services. (Milford, Surrey)
(CBE is one step below a knighthood)