Gilmour joined the
United Nations in 1989 and worked in
Afghanistan,
Iraq,
South Sudan, the
Middle East,
West Africa, and the
Balkans. In 2016,
Secretary-General Ban Ki-moon appointed him UN Assistant Secretary-General for Human Rights, a post he held for over three years until the end of 2019, when he left the UN aged 55. During this period he was assigned the role of UN system-wide focal point for dealing with reprisals and intimidation that are carried out, usually by Governments, against individuals or NGOs who have cooperated with or seek to cooperate with the UN on human rights issues. He was a vocal defender of human rights activists who are under growing threats and pressure for their work. He has spoken out against human rights violations carried out against the Rohingya people of Myanmar, the Palestinians, the Syrian people and victims in many other countries including China, Egypt, Libya and the Philippines. These followed in particular after his visits to Yemen, Democratic Republic of Congo, South Sudan, Kenya, Liberia, Mali, Burkina Faso, Central African Republic, Afghanistan, Kyrgyzstan, Tajikistan, Honduras, and Colombia. He has also been an advocate in favour of LGBT rights, victims of torture, rape survivors especially among the Yazidis and Rohingya, and indigenous peoples' rights. Gilmour was appointed
Companion of the Order of St Michael and St George (CMG) in the
2020 Birthday Honours for services to human rights. == Publications ==