Due to the lack of any identifying information the precise nature of the carte de visite is uncertain although to my somewhat trained eye it appears to depict and actor costumed for a
military stage role. He appears to have either dyed his hair or - more likely - be wearing wig for his part. Either option seems unlikely for a serving British officer.

Carte de Visite
Hill & Saunders - Photographer
15 Kings Parade, Cambridge, England
c. 1900