CRG is a group of 14 independent wholesale suppliers who operate from 20 depots in the UK and Channel Islands.
"CRG has ambitious growth plans and membership of Landmark is part of this vision," said CRG managing director Colin Birchall.
Landmark, which was set up in 1972, is a centralised trading and marketing operation for independent wholesalers who sell to the catering, food service and retail markets through cash-and-carry stores and delivered services. It has an annual turnover in excess of £2b.
Landmark managing director Martin Williams said CRG was 'viewed as one of the most professional and respected foodservice buying groups in the country'.