"The QRA is being independently reviewed to ensure that we have a full understanding of the level of risk so that we can manage it effectively.
"Only at that point will we be comfortable to make a decision about reopening the reserve."
While people still have access to Clifton Beach, which has been open since June, Hastings District Council is continuing to manage and monitor the section of beach it administers as per its interim risk management plan.
Rock falls and landslides can happen at any time, Nelson-Smith added, so any visitors to the open section of the beach should be aware of this before heading out over summer.
Gannet Safaris Overland, which has been operating for more than 50 years, and runs tours to the gannet reserve said it was not and had not been effected by the slips that occurred along the beach.
"We have experienced an ongoing misunderstanding that the whole colony is closed.
"It is only the access from the beach up to the plateau that is closed. We have full access to the plateau overland and it is business as usual for us."