A planning meeting was to take place on Wednesday (4 March) between the consortium partners as HW went to press.
Following months of arbitration over the award, GreenSpace has now been given the go-ahead and will work with ENCAMS, which runs the Keep Britain Tidy campaign and Blue Flag beach awards, as well as conservation volunteer body BTCV.
Although the takeover is official from this month, the consortium will have to work closely with former scheme manager the Civic Trust to ensure a smooth handover.
GreenSpace chief executive Paul Bramhill said the coming weeks would be a chance for the organisation to consult with judges on the scheme on possible new ideas for Green Flag. "The major thing is not to frighten judges; there will be continuity and things will not change massively," he said.
"We are delighted to be part of the consortium that will deliver the scheme. The award is always an area of great interest and enthusiasm within our regional forums so we are very aware of just how important its continued success is to our membership and all green-space managers."
Civic Trust green environment manager Paul Todd is due to return from holiday next week, at which point further discussions will take place, added Bramhill.
Keep Britain Tidy (ENCAMS) chief executive Phil Barton said: "The prospect of working with BTCV and GreenSpace is very exciting."