The president of Shechita UK has urged the community to lobby MPs to prevent new EU regulations requiring kosher meat to be labelled "meat from slaughter without stunning".
Last month the European Parliament voted in favour of the amendment to the provision of food information to consumers, just two weeks after New Zealand banned kosher slaughter.
Henry Grunwald QC urged the Board of Deputies on Sunday to contact their MPs before the bill comes back for discussion in September.
The ruling, which only applies to food from religious slaughter, has been widely condemned by the Jewish community. Mr Grunwald said kosher prices could rocket because the non-kosher market, which takes the 70 per cent of shechita-slaughtered meat not permitted to Jewish consumers, might be deterred by the labelling.