A supermarket ombudsman to broker meetings between suppliers and the big retailers is expected to be among the recommendations in the latest Competition Commission report due for release at 4.30pm (Friday, 15 February).

In its initial report in October, the commission voiced its concern that retailers were able to transfer unexpected costs to their suppliers. And that there were aspects of the grocery market that prevented or restricted competition.

The commission is also expected to recommend changes to the planning system to tackle the fact that supermarkets hold undeveloped land preventing competitors from establishing rival retail outlets.

This could involve a limit on the length of time supermarkets can keep undeveloped land or the enforced selling of stores or land in areas where a particular retailer is too powerful.