Philosophen sollen Könige, die Könige Philosophen sein.

sludgegulper posted a photo:

No idea of the original registation (PS see helpful comment below from @landesreach) Very smartly painted and lettered. Cyril Woo Ming, N15. Sporting Union Jack and Guyanese flags, as with Cyril's Irizar.
An earlier incarnation of this coach may be seen here on Flickr, where ironically, it was a regular coach for the London run.