Viscount Portman and family were ranked 89th in the Sunday Times Rich List 2024, with an estimated wealth of £1.9 billion.

This fortune is principally the controlling interest in a 110-acre (0.45 km2) portion of Marylebone, central London, the Portman Estate.

The trust is spending £40 million on an investment programme to create a shopping area, Portman Village.

Lord Portman's other assets include shares in commercial properties in New York state and Florida.

Portman's first wife was Caroline Steenson, and they had one son:[3] In 1987, he married the Brazilian Patricia Martins Pim, now Viscountess (Lady) Portman, and they have two sons:[3] [4] This biography of a viscount in the peerage of the United Kingdom is a stub.