14. Elton John
Apart from Queen Elizabeth II, Elton John too owns a Coutts Silk Card. It is one of the most exclusive cards that are offered only through invitation. The card is issued by Royal Bank of Scotland, which is one of the oldest banks of the world. Cardholders of the Coutts Silk Card are given a monthly spending limit of £20,000 initially; and later on if they spend a minimum of £50,000 per year with this card, they do not have to pay any annual charges. The best part of this card is that it offers special benefits and privileges from participating luxury retailers, hotels, and high-quality wine suppliers across the world.