Rabbi Jeremy Conway, director of the kosher food division at the London Beth Din, attributes part of the growth in demand to: "a growing perception among the non-Jewish community that kosher food is cleaner and so less likely to cause dietary problems".
David Busse, KLBD's technical sales manager of raw materials and ingredients, says the body has added 100 new companies to its books every year for the past three years.
"The whole field of kosher certification has blossomed out of recognition," says Busse. "A lot of it is keyed into the issue of food safety and consumer fear. It's a perception that kosher food is more healthy."
KLBD kosher certifies a wide range of ingredients including oils, flavourings, amino acids, resins, flour, wheat, barley, malt and rice plus finished products such as Ryvita, Mars Bars, Bendicks chocolate and Drambuie.
Beth Din works with a global client base, and its rabbis travel as far as Malaysia, China, India and Vietnam to audit the manufacture of food and ingredients to supply kosher markets in Europe and the US.