Daniel Trinder quit the regulator earlier this month.
Grocery Commissioner Pierre van Heerden says warning relates to supermarket's treatment of a supplier.
Gallagher's stake in the Wellington-based pest control company has helped open more overseas markets.
Authorities blocked New Image Group founder Graeme Clegg’s departure over unpaid court order, says Vietnam trade organisation.
Heartland Bank appointed receivers to the group in April and is owed close to $8.9m under various security agreements.
Jersey-registered Pinewood Investments has appointed receivers.
The alternative dairy manufacturer went into liquidation last week after two creditor compromises were voted down, NBR can reveal.
New Image Group founder Graeme Clegg is back at work in Auckland after issue with Vietnamese authorities.
UPDATE: First report details amounts owing to Graeme Hart's Walter & Wild, IRD and ANZ.
The NBR Rich List Skeggs Group founder was a pioneer private investor in deepwater fishing.
