Potential Suppliers Policy Andrew Sound operates a rigid policy of using only approved suppliers.   This helps safeguard Andrew Sound and our clients against unethical businesses also helping to ensure a consistency of quality & supply. Unless you are a business with whom we already have a satisfactory trading relationship, cold calls either in person or by telephone will be rejected, as will unsolicited E-Mail & facsimile messages. Should you wish to become a supplier, approved to trade with Andrew Sound you shall need to make contact by letter in the first instance. As part of our selective trading policy approved suppliers of goods or services have a code number suppled to comfirm their bona fides in this matter. Main Menu