Top horticultural judges descended on Lewisham on Wednesday (12 July) and visited the borough's best sites.
Steve Bullock, Mayor of Lewisham, said: "We won in 2003 and made it to the Britain in Bloom finals in 2004.
"Having picked up the Silver Gilt Award last year, coming joint top with Richmond and Kensington and Chelsea, we are determined to keep up the momentum.
"Well done to everyone who has worked tirelessly to put Lewisham on the map as one of the cleanest and greenest places to be."
The London in Bloom judges started out at Beckenham Place Park before moving on to Chinbrook Meadows, Staplehurst Road, Manor House Gardens, Blackheath, Creekside Education Centre, Telegraph Hill Park, Horniman Museum Gardens and the Clean and Green Schools Awards at the Town Hall.
The judges were also shown how the council is promoting environmental initiatives like recycling, biodiversity and energy saving, which are also taken into account.
Community groups and local people played their part by helping to keep the streets clean and creating stunning floral displays.
With help from the council, The Friends and Users of Staplehurst Road Shops (FUSS) transformed their neighbourhood into an array of blooming flower boxes, planters and hanging baskets.