Legendary dub reggae act Dreadzone will headline the 30th Lewisham People's Day in Catford next month.
Best known for their hit Little Britain, the band will come to Mountsfield Park on July 12 off the back of a Glastonbury performance.
Alongside them in the Big Top will be Deptford-based band United Vibrations with their "afro-beat-in-a-punk-style" music.
And the London African Gospel Choir, who have performed for Bishop Desmond Tutu, at the O2 Arena and in St James’s Palace, will also be putting in an appearance.
There will be seven stages in all, along with food, crafts, a sports arena, community stalls, "the smallest cinema in the world", a talking compost heap and the People's Patchwork - a quilt sewn by people across the borough.
The Lewisham Council and L&Q Housing backed event - billed as the area's biggest community festival - runs from midday until 8pm.