He later worked at the Royal National College for the Blind as a volunteer guide runner, including at the World Youth Games for the Disabled.

[1] At the 1984 Summer Paralympics in New York City, Brown won two gold medals in athletics for Great Britain in the 800-metre and 1500-metre.

[7] Brown retired from sport in 2015 and joined Mobiloo, a social enterprise that aims to provide portable toilets that are accessible for the disabled.

[8] He has since participated in several Extinction Rebellion protests and has been arrested several times for non-violent civil disobedience; he has cited his daughter for inspiring his climate change activism.

[9][10] At a subsequent court hearing, he denied the charge of causing a public nuisance and was granted conditional bail by a district judge that barred him from being within one mile (1.6 km) of an airport.