Green’s Dictionary of Slang

(W.I.) a parvenu, esp. with overtones of a bad reputation.

1933		(con. 1900s) C. McKay Banana Bottom 68: For with all his Panama success, Tack was in peasant parlance, a hurry-come-up.
1953		W.G. Ogilvie Cactus Village 27: I is not goin’ to allow any forrad hurry-come-up something like you to take any pass with me.
1964		A. Bennett God the Stonebreaker 130: You must ’ave come from the slums yourself, you is just a hurry-come-up mackerel.