material interest

3(in COB ) (in relation to a transaction) any interest of a material nature, other than:

1. (a) disclosable commission on the transaction;
2. (b) goods or services which can reasonably be expected to assist in carrying on designated investment business with or for clients and which are provided or to be provided under a soft commission agreement or in compliance with COB 7.18.3 R (Use of dealing commission to purchase goods or services)29