"We are extremely grateful to the Ministry of Health and for the assistance of Sport New Zealand to allow these players the opportunity to be a part of the Netball Series," she said.
"To be able to play international sport during these times is something we don't take for granted, so we'd like to acknowledge the work done behind the scenes from many to ensure this series can go ahead."
There were a number of factors considered in putting in an application for an exemption including the unavailability of three members of the Silver Ferns leadership group due to injury and pregnancy, and with leaders Crampton and Fitzpatrick both located in Auckland, the team would lose a vast amount of experience.
A risk of injury to players called in to replace the quartet was also considered with a limited amount of time to prepare for the international tests, while the dates for the three-test Netball Series were unable to be moved as England had commitments in Australia following the series.
Silver Ferns coach Dame Noeline Taurua said she was pleased to have the chance to have her full squad together for the series which was a key part of their long-term planning leading into next year's Commonwealth Games.
"We are so very grateful to be in this position of playing an international netball series against England and are looking forward to ensuring we make the most of this opportunity as we continue our build-up to the Commonwealth Games."
The Silver Ferns and England Roses have been following Covid-19 protocols and will work under those conditions during the series.
The world champion Silver Ferns play the first test against England on Monday, followed by matches on Wednesday October 22 and Friday October 24.