Ancestors in UK.

My father Arthur George EMMS came to New Zealand in 1920's. Born in Forest Gate West Ham. Family of 5, 2 sons and 3 daughters. Links to Limehouse, Poplar, Romford areas and I think Kingston-on-Thames? Pleased to provide NZ information on our branch of family. Would like to know more about UK side, can provide details back to 1816 and 1785 if Kingston-on-Thames is correct.