High Steward of Westminster Abbey

From the Wikipedia page

The High Steward of Westminster Abbey is an honorary role at Westminster Abbey, London. He is appointed by the Dean and Chapter, and holds the office for life. Past holders have included Robert Cecil (16th century) and Douglas Hurd (fl. 2004), and the present holder is Lord Luce.

The official costume is an orange cape and white ruff.

The deputy High Steward is an ex officio role of the Lord Mayor of Westminster.