Grey Power will set up shop in Club Metro's Ridgway St building as part of a new partnership signed between the two organisations.
The partnership will see Grey Power open an office at the Club Metro premises, operating out of the committee and meeting room near the building's entrance.
Club Metro board chairman Robert Allen said the move was a win-win situation for both organisations.
"From Club Metro's point of view, it's giving us access and exposure to a large group of people we didn't have before.
"We're looking forward to working with Grey Power and giving their membership base some top class facilities we have for dining and entertaining."