As a child, Lewes likely had a close relationship with his parents and siblings (if any). The details of his family dynamics are not widely available, but his upbringing in a British colonial setting likely shaped his early relationships.

During his time at boarding school and Oxford University, Lewes undoubtedly formed close friendships with his peers. His involvement in sports like rowing and boxing would have fostered camaraderie and teamwork. Details about specific friends are limited.

It is likely that Lewes had romantic interests and relationships before the war, but specific details are currently not readily available. Further research into his personal papers, if they exist, might reveal more information.

Within the SAS, Lewes forged strong bonds with his fellow soldiers. The shared experiences of intense training and dangerous missions created a deep sense of camaraderie and mutual respect. Men like Stirling would have been close comrades.