What is that largest loyalty card scheme company in the UK that is managed by a company listed on the Toronto Stock Exchange?
Aimia (company):  Aimia manages various loyalty programs including Aeroplan in Canada, Nectar (UK and Chile) and provides loyalty strategy, program development and management services to clients underpinned by product and technology platforms such as the Aimia Loyalty Platform and Smart Button, and through their analytics and insights business, including Intelligent Shopper Solutions. Aimia (company):  It is publicly listed on the Toronto Stock Exchange. Nectar loyalty card: Nectar is a loyalty card scheme in the United Kingdom, run by Aimia.
i don't know