Hatton was born and raised in Wyke Regis, Weymouth.[3][4] He attended Holy Trinity primary school and All Saints Academy.[5][6] He played rugby at Weymouth RFC and his first job was working weekends with his dad in a fish and chip shop.[7] Hatton attended Queen Mary University, London, reading history and politics.[7] After graduating, Hatton became a political researcher and is a former member of the Youth Parliament.[1][8] He has also been a school governor.[9]
In July 2024, Hatton was elected MP for South Dorset replacing incumbent Richard Drax who had previously held the seat for 14 years.[10] Following his victory, Hatton relocated from London to Weymouth and resigned as a Camden councillor the week after becoming an MP.[6][11]