Gillick competence is a term originating in England and Wales and is used in medical law to decide whether a child is able to consent to their own medical treatment, without the need for parental perm
Badge worn by some in protest against Gillick's campaign in the early 1980s. Here, the call to "Reverse Gillick" refers to reversing the Court of Appeal judgment, not the subsequent House of Lords judgment that overturned it.