The son of Samuel and Mary Hanson (née Choppin), Reginald was educated at Tonbridge School, Rugby School and Trinity College, Cambridge (MA, LLD).[1] The then headmaster of Rugby School Dr Frederick Temple (later Archbishop of Canterbury) said of Hanson on his departure, "I have a most sincere and warm regard for him. The manly desire he shows to get rid of his faults, and to do his duty, will always deserve the respect of all who know him. There are a few from who I part with so much regret at my own loss". Indeed, this sense of duty was upheld and he held numerous positions of public office.
Following graduation, the young Reginald joined the Commercial Union Assurance Company (now part of Aviva plc) which was previously co-founded by his father Samuel. Within a year he was appointed to the Board of directors where he remained until 1882. By this time, he had already joined the family wholesale grocery business, Samuel Hanson & Son Limited.