I've been looking at photos of the Carlton House Council Room and I don't see any portraits of John Durham or anybody else of modern times. This email from Will Levi to John Durham doesn't make any sense to me, has anybody looked into this before?
https://www.justice.gov/oip/foia-library/general_topics/communications_durham_06_19_20/download
https://www.tagvenue.com/rooms/london/1623/10-11-carlton-house-terrace/council-room