Are halal labels important?
8 May 2014 Last updated at 18:06 BST
Faith leaders have called for clearer packaging after it emerged some meat is sold in the UK which could qualify as halal but is not labelled as such.
Five leading UK supermarkets have defended selling such meat.
The BBC spoke to members of the public in central London and asked them how important it was to them whether meat was labelled as halal.