Membership of the Platinum Club, which will offer better trading terms in return for strict promotional compliance on agreed lines, will be by invitation only. All products will be pre-allocated, and all Platinum offers must be on off-shelf display.
Retrospective bonuses will be paid every four weeks based on EPoS sales rather than on the invoiced amount.
Although the Multiple Retail Group had been a big success, and Capper's MRG members had picked up £300,000 a year in bonuses, it tended to focus on convenience lines, and many members felt it needed a grocery layer, said a spokeswoman.
Sales director Alun Williams said retailer discipline was critical and revealed 24 stores had been struck off the Spar Red Dragon Guild because of poor trading disciplines.