MCDONALD’S has topped a global ranking of farm animal welfare standards among fast-food chains, but still has “a lot more work to do” to reduce the suffering of factory chickens, according to a report.

The fast food giant beat KFC, Burger King, Subway and Starbucks in the sixth Business Benchmark on Farm Animal Welfare (BBFAW) ranking of 110 global food companies.

No fast food company achieved the top tier one status in the ranking but McDonald’s were towards the top of tier two after making farm animal welfare a part of its business strategy.

Waitrose, Marks & Spencer and The Co-operative Group all achieved tier one ranking.

However KFC, Pizza Hut and Starbucks could only manage tier five, defined as showing limited evidence of implementation, while Subway and Burger King both ranked in tier four, defined as making progress.

World Animal Protection, who compiled the ranking, said McDonald’s, like other businesses, still had “a significant way to go to improve the welfare of the millions of chickens it serves”.