Is this Neville Chamberlain in the photograph?
You are correct.
"Is this Neville Chamberlain in the photograph?"
Yes, his notorious "peace in our time" plagerism of Disraeli:
"My good friends, this is the second time in our history that there has come back from Germany to Downing street peace with honor" - Chamberlain, after tossing the Czechs to the Nazi wovles for the promise of "future negotiations".