Gill was born in Kenya but was brought up in England; she is married with four children. Her professional background is in finance and business and has been a Trustee of Charities since her mid-twenties, some of them with operations or offices in Africa. She has been Third Estates Commissioner for the Church Commissioners of England and President of CMS during a varied career.
Gill alizaliwa Kenya lakini alikulia Uingereza; ameolewa na ana watoto wanne. Ni mtaalamu wa masuala ya Uhasibu na Biashara na amekuwa kwenye bodi za Udhamini tangu akiwa na miaka 25 baadhi ya bodi hizo zipo na ofisi Afrika. Amewahi kuwa Kamishna wa Church Commissioners wa Uingereza na Raisi wa of CMS kw nyakati tofauti.