Gina Nadira Miller is a Guyanese-British business owner and activist who initiated the 2016 R (Miller) v Secretary of State for Exiting the European Union court case against the British government over its authority to implement Brexit without approval from Parliament.
In September 2019, she successfully challenged the government's prorogation of Parliament, formally supported in the legal case by the former prime minister Sir John Major and the shadow attorney general, Shami Chakrabarti. She founded the True and Fair Campaign in 2012, calling for an end to financial misconduct in the investment and pension industries.
She has written that she was brutally attacked while at law school, that some of her attackers were fellow students, and that the attack caused her to give up her degree course. She stated "Well, I was attacked because I was not behaving like I was supposed to be behaving.... I was being too western." The attackers were Asian, and they had mistaken her for being Indian. She gained a degree in marketing, and an MSc in human resource management at the University of East London. In 2017, she received an honorary Doctorate of Laws from the University of East London, 30 years from when she had attended as a student.
She owned a property photographic laboratory in 1987, before becoming a marketing and event manager at BMW Fleet Division in 1990. She started a specialist financial services marketing agency in 1992, and launched the Senate investment conference programme in 1996. She became a marketing consultant in 2006. In February 2009, Miller co-founded the investment firm SCM Private (now SCM Direct) with her husband Alan Miller. She has been a leading campaigner against hidden charges in pensions and investment and what she has described as "flagrant mis-selling within the asset management market". She set up Miller Philanthropy (rebranded to the True and Fair Foundation) in 2009 (which closed in 2019), and established MoneyShe.com in 2014, as a female-focused investment brand.