According to the British government, it aimed to provide a modern and mature relationship that is not based on colonialism between Gibraltar and the United Kingdom
Interesting, the entries on Criticism and Independence suggest that Gibraltarians themselves are not united on matters regarding colonial status.
Also hadn’t realised that if the UK gives up it’s interest in Gibraltar then under the Treaty of Utrecht Gibraltar could not become independent without Spain’s consent. This is recognised by the UK but not by Gibraltar.
Maybe when May has sorted out Brexit she could tackle this one next, what could go wrong