Smith & Williamson

Founded in 1881, Smith & Williamson's is an interesting model: an accountancy firm with its own private bank. The combination may surprise many onlookers but its a pact that works. The firm recorded double-digit growth last year with exceptional growth in its corporate finance arm. More than that, it boasts a clientle of high net worth individuals that would make even the strongest rival weep with envy.

Link: the Smith & Williamson website