However, the web address was found to be unregistered and was quickly snapped up.
Removable chalk-powder graffiti was sprayed in locations around London and Birmingham featuring the web address ''. Motion comics of two segments of the graphic novel were added to the DVD & Blu-ray release of 28 Weeks Later. In July 2006, Fox Atomic Comics and publisher Harper Collins announced the publication, in early 2007, of 28 Days Later: The Aftermath, a graphic novel bridging the gap between 28 Days Later and 28 Weeks Later.
The sign contained the international biological hazard symbol, along with the admonition that Britain was 'contaminated, keep out!'. On 13 April 2007, 28 days before the release of the film in UK cinemas, a huge biohazard warning sign was projected against the White Cliffs of Dover. On 1 September 2006, principal photography for 28 Weeks Later began in London with much of the filming taking place at Canary Wharf.
On 31 August 2006, Harold Perrineau was announced to portray a US Special Forces pilot in the film. On 23 August 2006, Jeremy Renner was announced to portray Doyle, one of the principal characters for 28 Weeks Later. Boyle said in March 2005 that the sequel would feature a new cast, since previous cast members Cillian Murphy, Megan Burns, and Naomie Harris were occupied with their own projects.
