MSYS chairman Alan Toft praised Raj and his wife Sunita for their work in their local community.
Raj is chairman of the Foxes MSYS Retailer Forum, a group of independent retailers in Leicester who teamed up with Leicester City FC to get club coaches training local youngsters in soccer skills.
He also led a 500-strong group of residents who crowded into Wigston Council's chamber to protest against proposed road closures, forcing the authority to reconsider.
The Aggarwals have raised more than £20,000 for tsunami victims and organise trips to theme parks for local families.
Raj said: "We are pleased to receive this gold medal, not just for our business but because it helps the marketplace and the consumer to recognise the true value of the family-owned business. There are so many independent c-stores, newsagents and rural shops who support their local communities in so many ways and this personal interface just cannot be replaced by the giant retailers."
MSYS's Toft said: "Raj and Sunita are role models for the independent sector - fully involved in their community – and the community responds and keeps the tills ringing."
The other finalists were Steve Robinson, of Best-One in Streatham Hill, south London; Geeta and Charanjit Doal, of Doal's Lifestyle Express in Wheaton Aston, Stafford; and John Mainwood of Premier Store & Post Office in Sedlescombe, East Sussex.