The first attempts to market potatoes in the United Kingdom in unit retail packs were made in the twenties, but public response was so poor that these early endeavours soon died a natural death. Spasmodie attempts were again made to establish a market for cleaned and packaged potatoes in the early fifties, but even then the time was not ripe. However, success immediately attended the establishment in 1954 of two experimental packing stations, sponsored by the farmers' organisations; by 1959 sales had reached a total of at least 375 million packs per annum. This success was closely linked with the development of self-service stores. There were 2,100 such stores in the United Kingdom in 1954: today there are well over 7,000. Sales channels linked packers and retailers directly in the early years: nowadays, some 60% of the total volume of sales passes through the hands of wholesalers. The majority of packing stations is still owned by producers, however, and remains located in producing areas. In 1958/59, about 11% of the ware crop was packaged: the latest estimates suggest that that figure was considerably exceeded and may even have reached 20% during the most recent, the 1959/60 season. Almost the whole of this tonnage was packed into units of 3,5 or 5,0 lbs (approximately 1,6 or 2,2 kg). Typical modern packing stations are organized as a series of production lines, each of 5,000 or 6,000 kg per hour capacity. Buffer storage is usually provided at the packhouse for 5 or 6 days' requirement. This reserve is commonly held in sacks, only a very few packers practising bulk storage, and none at present storage in pallet boxes. Mechanical conveying has been popular in packhouses but it is now giving way to water fluming. Regenerated cellulose, cellulose acetate, and polythene films are customarily used for unit packs. Kraft paper for outers. Closure is normally by means of self adhesive tape, but rubber bands and wire staples are used to some extent. Outers are sewn or tied with a wire twist. Approximately 35% of packaged potatoes are dry bushed and some 60% washed, the remaining 5% being packed without cleaning. The porportion washed is increasing rapidly and the proportion dry-brushed declining, the public having shown a marked preference for the washed material. Washed potatoes are invariably dried in some measure, usually by sponge rubber rollers, but sometimes by the application of heat in addition. A pilot quality control scheme has been operated by the farmers' organizations during the past two years. This scheme is now being extended and an associated brand mark introduced: the brand mark will be nationally advertised.