SPAR UK MD Jerry Marwood explains to Retailvision’s Dan Munford the retailing secrets of SPAR's success and details the convenience chain's strategy over the last 24 months to drive own-brand participation from 24% to over 30% of sales and the decision to employ a specialist third party to make ensure new products meet the quality requirements of consumers. Marwood highlights how “strategically as a business, you need the negotiating strength that own-brands give you… You need an alternative to just being driven by the big brands”.