Edward Morello: Well, we should put on record that you have served under four different Prime Ministers. At any point during your tenure as perm sec, were you asked by a No. 10 organisation to withhold information from the Foreign Secretary? How usual is that request?
Sir Philip Barton: I am worried that everyone is going to think that the centre of Government spends its whole time sort of conniving behind the backs of everyone else in Government. That is not the reality. The reality is people trying to get on with delivering the business of the Government the vast majority of the time. My best answer to that question is that it is unusual. However, in the end, it is particularly around things where you might have a policy disagreement or difference of view between the Prime Minister and the Secretary of State.
It is not unheard of for permanent secretaries, in a sense, to try and work in a way which allows there to be a decision, and a consensus view in the Government to then move ahead and take it forward. In that sort of situation, it is not unheard of for a permanent secretary to be privy to something that they are asked not to pass on to their Secretary of State. I would describe it as not unheard of, but I do not want to give the impression that this is standard operating procedure.
Q344 Chair (Emily Thornberry): But this is absolutely extraordinary. The permanent secretary at the Foreign Office can be told, “Don’t tell your boss about this” when they are the Foreign Secretary? Has that ever happened to you before this?
Sir Philip Barton: Yes, it has.
Q345 Chair: Really?
Sir Philip Barton: Yes.
Chair: Well, you learn something new every day.
(Oral evidence: Work of the Foreign, Commonwealth and Development Office, HC 385, Tuesday 28 April 2026)