There has only been one female one in the last 20 years.
From the FCO website:
View attachment 146114
Obviously, we can rule out Jeremy Hunt, because we're talking about a past Foreign Secretary, and - naturally - Margaret Beckett's out of the frame.
But, apart from that, it is clear that this thread is in no danger of libellously identifying any one specific individual. Which is good.
Are any of them notorious philanderers perhaps ?
Alex