Sir Neville Henderson with Lord Halifax and Sir John Simon at Foreign Office. Sir Neville Henderson, British Ambassador to Berlin, who was urgently summoned to London for consultation with the Government on the situation in Central Europe, saw Lord Halifax, the Foreign Minister, and Sir John Simon, the Chancellor of the Exchequer, at the Foreign Office. Photo shows, Lord Halifax and Sir Neville Henderson, leaving after the meeting at the Foreign Office. 29 August 1938