McKenna & Co was founded in 1982 as a partnership by Catherine & Michael McKenna. Initially the partners dealt exclusively with the trade, supplying many fine jewellers and museums world-wide.
In 1986 the partners opened their first retail shop in Brompton Cross in London. Within two years the partners had outgrown the first shop and acquired the current larger Regency townhouse premises in nearby Beauchamp Place, Knightsbridge. The partners recently incorporated the business to facilitate expansion and to enable the appointment of additional directors. McKenna & Co has developed a reputation for supplying finest quality wearable and collectable jewellery, dating from the 18th to the latter half of the 20th centuries.