Question: Business for Britain was founded in April 2013 by 500 business leaders including an English businessman and life peer, who was the executive chairman of the British retailer Marks & Spencer, he was also knighted in 2008 for his services to the retail industry, who is this businessman?
Sentence (from "Air 500"): Dennis Chadala stayed on with the company during a short transition period that ended in February 1999.
Relevant evidence: No