Harold Poynton was born in Lupset, Wakefield, West Riding of Yorkshire, England. He was a pupil at St Michael's School, Flanshaw, Wakefield, and then Snapethorpe School, Lupset, Wakefield, and he would watch Wakefield Trinity play over-the-wall without paying. He joined the British Army at age 18, whilst stationed in Germany, he played association football, and for the first time he played rugby football, and he left the army aged 21, and in 1957 he trialled for Wakefield Trinity's A-Team. He worked as a warehouseman c. 1963, and he later worked as a salesman for a food company. His nickname of "fishcake" originated from his habitual fish and chip shop order following training sessions with Wakefield Trinity, and was given to him by Derek Turner. He and his wife Kath ran newsagent's shops for over 30 years, initially on Hesley Road, Kettlethorpe, Wakefield, and then on Dewsbury Road (opposite Ashleigh Avenue), Lupset, Wakefield.[4]
On 15 July 2007 Harold Poynton had the beer Poynton's Pride named after him.[5] Harold Poynton's funeral service took place at Wakefield Cathedral at 11:00am on 21 June 2018, followed by cremation at Wakefield Crematorium at 1:00pm, and a reception at Waterton House.[6]
Geoffrey Oakes, Reg Parker, and Harold Poynton made their début for Wakefield Trinity in the 17–12 victory over St. Helens at Belle Vue, Wakefield on Saturday 1 February 1958, in early 1963 he was the subject of a £8,000 transfer bid from St. Helens,[3] (based on inflation, this would be equivalent to £211,596 in 2023) (based on increases in average earnings, this would be approximately equivalent to £322,100.00 in 2017),[8] and he played his last match for Wakefield Trinity against Huddersfield at Belle Vue, Wakefield on Saturday 13 September 1969, after which he retired due to a recurring knee injury.