Shoppers would gain the right to know whether meat has come from animals killed using halal or kosher methods under a Labour government, as part of a major package of measures to promote animal welfare.
All meat would be labelled to reveal whether the animal was stunned or not, as well as which country it came from and how it was produced.
Kosher meat produced in line with Jewish traditions, and some halal meat produced according to Islamic traditions, comes from animals which are not stunned before they are slaughtered.
But some vets and animal welfare groups say this causes unnecessary suffering. Current UK law requires all other meat to be stunned before slaughter.