Where can I find the best deals?

Even though an obvious starting point would be the high street, the most competitive deals may not be available.

The services of a specialist broker can cover the whole market.

Most commercial mortgages are variable rate.  In residential terms this would be called a “Tracker” mortgage as the rate would, most commonly, be quoted x% over base or LIBOR.  However, fixed rate commercial mortgages are available if it suits the circumstances of the borrower.