He was the founder and first Chief Fire Officer of the Turks and Caicos Islands in the British West Indies and is an adviser on emergency service reform and disaster management to many governments.

He was the British Government Fire Service adviser for the UK Overseas Territories between 2002–2009 and formed part of the FCO Disaster Management Review Team.

[4] In 2009 he founded 'Gannon Emergency Solutions'[5] with offices in London, the United States, South America and Thailand providing specialist Fire Service reviews for Governments, NGO's, private companies and institutions.

In 2019 Gannon led the coordination of international aid in response to the Bolivian Amazonic wildfires Embajada británica se solidariza por los incendios y brinda apoyo con dos expertos.

[8] While working in the Turks and Caicos Islands, Gannon was selected to represent the country as a central defender in their FIFA World Cup qualification campaigns in 2004 and 2008,[1] [9] An article published by Bloomberg said that the players had to raise finance for their own travel fees for away games.