MARS Bars sold in the UK and Ireland are to be made with Fairtrade certified cocoa, it has been announced.

The move, unveiled ahead of the annual Fairtrade fortnight beginning next week, makes Mars the first UK company to commit to Fairtrade's new cocoa sourcing programme, to give farmers more opportunities to boost their livelihoods.

The programme aims to help farmers sell more of their cocoa on Fairtrade terms, giving them a fair price for their product and a premium to invest in improving their incomes and lives, and to connect them more directly with companies that will support them.

Farming co-operatives in the Cote d'Ivoire will be the first to benefit from the partnership with Mars, with expert support and investment of the premiums in boosting productivity including training, fertilisers and higher yield and disease resistant crops.

Mars Bars that use Fairtrade cocoa will appear in stores in the UK and Ireland from October 2015.

The commitment, which follows on from Fairtrade certification for Maltesers in 2012 and a partnership in Germany for Twix, means globally Mars will be paying premiums of £1.3 million a year to cocoa co-operatives in West Africa by 2016, the company said.

Mike Gidney, chief executive of the Fairtrade Foundation, said: "We're entering a new era in Fairtrade's work with cocoa farmers in West Africa, increasingly connecting forward-looking businesses like Mars more directly to entrepreneurial cocoa co-operatives who themselves want to be at the forefront of product quality, productivity and rural community improvement."

Blas Maquivar, president of Mars Chocolate UK, said he was proud that Mars Bars were at the forefront of the cocoa sourcing programme.

"This partnership brings us one step closer to sustainable, ethically sourced cocoa becoming the norm in the chocolate industry," he added.