Barrow joined the Foreign and Commonwealth Office (FCO) in 1986 and worked as a desk officer in the Western European Department from 1987 to 1988. He then did Russian language training for a year before taking part in the British Days Exhibition in Kyiv, the capital of Ukraine, in 1989. From 1990 to 1993, he was the second secretary at the British Embassy in Moscow, and then returned to London where he was head of the Russia Section in the Foreign Office for a year. From 1994 to 1996, he was private secretary to a Minister of State for Foreign Affairs. Barrow was then appointed as a first secretary of the United Kingdom Representation to the European Union, serving from 1996 to 1998, before returning again to London as a private secretary to Robin Cook, the Foreign Secretary.[4][5]
London, Brussels, Kyiv and Moscow (2000–2017)
In 2000, Barrow was appointed as head of the Common Foreign and Security Department at the Foreign Office, and in 2003 was appointed as the assistant director of the Europe Directorate - External, including during the UK's presidency of the Council of the European Union in 2005. He was also involved in negotiations over the Treaty of Lisbon at this time.[6] Barrow served as deputy political director at the Foreign Office from 2005 to 2006 before his appointment as Her Majesty's Ambassador to Ukraine in 2006. He took up the post in July that year and held it until 2008 when he returned to Brussels as UK Representative to the Political and Security Committee and Ambassador to the Western European Union.[4][5]
In February 2015, following the murder of opposition politician Boris Nemtsov, Barrow hosted the former Prime Minister John Major. He also attended Nemtsov's wake with Major and joined other Western ambassadors in laying flowers at a tribute to him near Red Square. Politico reported that he was a "low-key" ambassador, which allowed him to avoid some of the vilification aimed at other Western diplomats. However, this masked some significant achievements that he made in a tenure marked by Russian military interventions in Ukraine and Syria and a crackdown on dissent by Vladimir Putin. Aleksey Pushkov, who led the State Duma foreign affairs committee during Barrow's tenure, commented that "He created the impression of a real professional who was able to advocate the positions of his own government, while also striving to find out and understand Russia’s positions."[8]
After leaving his role in Moscow, Barrow was appointed as a political director at the Foreign Office in London, succeeding Simon Gass.[9] This role included overseeing international organisations, multilateral policy, Eastern Europe, the Middle East and North Africa, Africa, South Asia and Afghanistan.[5]
Permanent Representative to the EU (2017–2020)
On 3 January 2017, Ivan Rogers resigned from his position as Permanent Representative of the United Kingdom to the European Union, citing frustration over the government's negotiating strategy in their planned withdrawal from the European Union.[10] The next day, Barrow was appointed to replace him. A Downing Street spokesman said Barrow was "a seasoned and tough negotiator, with extensive experience of securing UK objectives in Brussels."[9]Charles Crawford, who worked with Barrow in the early 1990s, commented that he "understands Brussels and the EU, but he is not pickled in its ghastly processes."[11] The Financial Times reported that Barrow's appointment was opposed by Oliver Robbins, the permanent secretary at the Department for Exiting the European Union, who wanted to take control of negotiations with the EU himself. However, the Foreign Office overruled him.[12]
On 17 October 2018, Barrow accompanied British Prime Minister Theresa May to the European Council summit in Brussels.[18] After the Council meeting, Barrow wrote to the Secretaries General of the Council and Commission of the European Union on behalf of the UK. His letters stated that the UK had no doubt over its sovereignty of Gibraltar, including British Gibraltar Territorial Waters, and that Gibraltar's sovereignty would never be transferred against the democratically expressed wishes of its citizens.[19]