"We don't want to fight but by Jingo if we do We've got the ships, we've got the men, we've got the money too We've fought the Bear before, and while we're Britons true The Russians shall not have Constantinople." - pub song by G.H. MacDermott
Jingoism is nationalism in the form of aggressive and proactive foreign policy, such as a country's advocacy for the use of threats or actual force, as opposed to peaceful relations, in efforts to safeguard what it perceives as its national interests. Colloquially, jingoism is excessive bias in judging one's own country as superior to others—an extreme type of nationalism.
ANGLO NATIONAL SOCIALISM
In the 1880s, Henry Hyndman, leader of the Social Democratic Federation, turned against internationalism, and promoted a version of Socialism mixed with nationalism and antisemitism - even to the point of attacking fellow Socialist Eleanor Marx in antisemitic terms, noting that she had "inherited in her nose and mouth the Jewish type from Karl Marx himself". When taking part in the breakaway group which founded the Socialist League, Eleanor Marx wrote polemics in which she characterized Hyndman and his followers as "The Jingo Party".
(Trace this through to Jeremy Corbyn and the British Labour Party's unionist left in the 21st-century.)