What message would you want to send as a neighbour? That's the question put to leading designers around the world who each created a limited edition poster to help raise money for The Manna Society, a homeless charity in Bermondsey.

Organised by London agency dn&co, the resulting artworks are to go on show at Hey Designer! – a new exhibition at its gallery, Ground Floor Space, during this year's London Design Festival from Saturday 14 September.

Those involved include Alex Hunting Studio, Carter studio, Charlie Smith Design, Colophon, Commission, DIA, Here, Hey, Lee Mawdsley, Mucho, OMSE, Rejane Dal Bello, Socio, Spin, Studio Lowrie, Studio Makgill, Studio.Build, Supermundane, Supple Studio, Systems Studio and TM Studio.

Patrick Eley, creative director of dn&co says: "Living as neighbours can be difficult, funny, sometimes ridiculous, sometimes dangerous. With four billion of us now living in cities, and even more of us online, we have to reconsider what being a neighbour is and find new, imaginative ways to communicate. We invited some of the world’s most talented designers to have a go at it. Their responses reveal a surprising picture of sharing, kindness, loneliness and kinship; from petty disagreements on our doorsteps to a call for global citizenship."

The limited-edition prints will be available in editions of 20 and priced at £40 each. They will be on sale during the exhibition, and online at the dn&co shop, with net proceeds going to The Manna Society. The posters are printed by People of Print on GF Smith’s colorplan.