The exhibition catalogue
Graffiti writer and Letter Exchange member Errol Donald working on banners with students from Central Saint Martins
Errol and fellow Letter Exchange member Annet Stirling working on the letter O
Spraying over and removing a mask of the letter D working from a drawing provided by Letter Exchange Member Richard Kindersley
Part of the exhibitionn in the atrium windows at Central Saint Martins
The final banners
