The South London Waste Partnership has announced that WRG, Veolia and Viridor have been successful in making it to the next stage of its latest procurement process.
The companies have been invited to further "refine" their proposals on how they would treat up to 200,000 tonnes of residual household waste every year that would otherwise be destined for landfill.
Cormac Stokes, chair of the South London Waste Partnership Management Group, said: "The three remaining bidders are proposing a range of innovative waste treatment solutions. Further confidential negotiations are required between the Partnership's Procurement Team and the bidders before further deselection of bids can take place."
The Partnership's Joint Waste Committee will meet in February 2011 to consider each bidder's refined solutions and agree which bids should progress to the next stage. Final tenders will then be submitted in April 2011 with the Preferred Bidder announced in July 2011.