this is a really useful guide
look at point 14
Is it a health problem?The government said at first that there was no health risk from horsemeat, but a leading government public analyst pointed out that it could not be sure until it knew the source of the horsemeat. The latest advice from the chief medical officer is that there is a risk but that it is very low.
Horses are routinely treated with an anti-inflammatory drug called phenylbutazone, or "bute". Bute is banned from the human food chain, because it can in rare cases cause a potentially life threatening illness, aplastic anaemia, or bone marrow failure. Since it is not known what triggers the illness, it has not been possible to set any safe level for bute residues in human food. Doses from horsemeat are likely to be very low. Horse passports are supposed to record any bute administered so that animals can be excluded from going for food, but with large numbers of fake passports in circulation, some horses containing bute have been eaten.
Since the scandal the government has changed the rules so that horse carcasses may now only be released for consumption once they have been tested for bute. The first batch of tests found around 4% of horse testing positive. The horse trade from the Americas has similarly been bedevilled by problems with horse passports and drug contamination.
there is NO doubt that we have eaten bute...
this is a violation of the food law! Legal action needs to be taken!