Below is the MFAA's definition of a mortgage or finance broker
Brokers work with clients to determine their borrowing needs and ability, select a loan suited to their circumstances and manage the process through to settlement. Some benefits of using a broker:

They do all the legwork for you
Access to a wider range products
Experts in a wide range of products
More flexible

TYPES OF BROKING:
Brokers can specialise in areas such as:
Residential Loans/Mortgages
Reverse Mortgages/Equity Release
Equipment Leasing
Chattel Finance
Car and personal loans
Business Loans
Debtor Finance
Commercial Property Finance