From the end of April, meat in McMuffins to premium salads will only use 100% Freedom Food pork, currently delivered by less than a third of British pig farmers.
The Freedom Food scheme goes beyond industry standards and legislation with farmers required to provide bright, airy environments, bedded pens and plenty of space for pigs to move around in.
McDonald's said it hoped its support for the scheme would encourage more pork producers to adopt the criteria on their farms, while allowing customers to make "affordable, ethical choices on the high street".
Beauty retailer The Body Shop and non-profit organisation Cruelty Free International celebrated a milestone in 20 years of animal rights campaigning, as an EU ban on animal testing for cosmetics came into effect today.
From today onwards, anyone wishing to sell new cosmetic products and ingredients in the EU must not test them on animals anywhere in the world.
Singer Leona Lewis, who is also part of the campaign, urged governments around the world to introduce a ban on animal testing for cosmetics.
Lewis said: "Together we can send a message to governments worldwide that cruelty free is the humane future.”
Three people were arrested today inAmsterdam and London as part of a Europe-wide probe into suspected animalrights extremism, Scotland Yard has said.
Writing in the Veterinary Record Professor Reilly has called for action to curb, if not halt, the slaughter of animals for meat consumption without prior stunning.
Although legislation permits Jewish and Muslim "non-stun" slaughter, it states that this must not cause "unnecessary suffering".
He said an estimated two million animals were killed in the UK each year without stunning for the orthodox Jewish community.
Halal meat now accounted for a quarter of the entire UK meat market, Prof Reilly added yet the Muslim community represented only some 3% to 4% of the UK population.
A leading vet has spoken out against the "unacceptable" rise in the number of farm animals slaughtered by having their throats cut while fully conscious.
The practice is allowed under UK and EU law to satisfy the dietary requirements of Jews and Muslims.
However, according to Professor Bill Reilly, a past-president of the British Veterinary Association (BVA), there is evidence that far more animals are being killed this way than is necessary for religious reasons alone.