He was the eldest son of Sir Michael Herbert (1857–1903), the British Ambassador to the United States from 1902 to 1903, during the presidency of Theodore Roosevelt.
[9] When the Commons discussed Germany's resumption of submarine building in April 1935, Sidney declared: "Doesn't the expressed intention of the German Government to start afresh the building of submarines constitute proof--if proof is needed--that German rearmament is principally directed against this country.
[11] One of his last speeches in the Commons was on 4 October 1938 in which he challenged the government on rearmament -[12] Even a child in my village knows that we have not got Bren guns in the numbers that there ought to be for every battalion.
We got them last Wednesday and Thursday when we called for them and we can get them at the beginning of any war, but what is the good of having the men if we are to send them like sheep to the slaughter without armaments.
I was led to suppose that the locusts had stopped nibbling about two years ago, but I can hear their little jowls creaking yet under the Front Bench.
No answer has been given by any member of the Government, particularly the Minister for the Co-ordination of Defence, as to why these things have not been done.Herbert died unmarried in Cannes, France, on 22 March 1939, at which point the baronetcy became extinct.