They can campaign and eventually influence a change in the law. They may use a variety of methods such as television, advertising, events, petitions and merchandise. e.g The British Lung Foundation which campaigned to positively change lung health and contributed to the change introduced by the Children and Families Act 2014, which banned smoking in cars with children. Another example is CALM (Campaign Against Living Miserably) they brought about the introduction of a government Minister for mental health, inequalities and suicide prevention.