In February 2011, in response to the earthquake in Christchurch, New Zealand, Johnson took to Twitter in an effort to raise funds for ShelterBox, an international disaster relief charity established in 2000 in Helston, Cornwall, UK, that provides emergency shelter and other aid items to families around the world who have lost their homes to disaster or conflict. A ShelterBox (the actual aid kit itself) is designed to provide families with stable, lasting shelter and a level of independence after a disaster, and include high quality aid items chosen to best suit to the particular situation at hand. As described by Johnson at the time: