MacFarquhar proved a moderate figure, in line with Brown's views. He abstained on a vote to remove the disqualification of left-wing Labour councillors in Clay Cross who had broken council housing laws enacted by the previous Conservative government. However, there were exceptions: he also abstained on a vote to increase the Civil list payments on 26 February 1975. He acted as Parliamentary Private Secretary (PPS) to David Ennals, a minister of the state at the Foreign and Commonwealth Office, and retained the job when Ennals was promoted to be Secretary of State for Social Services. He was made a member of the Select Committee on Science and Technology.