Dairy Milk becomes Fairly Milk

This Fairtrade fortnight campaigners throughout the UK can smile. Cadbury's has announced that, from this summer, their Dairy Milk bar and hot chocolate drink will both be Fairtrade certified.

I'm really excited by this first step and what it might lead to, after all a victory is a victory. And this victory will taste sweet (sorry) when these products are on shelves around the country, proudly displaying the Fairtrade mark.

Big thanks have to go to the Fairtrade Foundation as they enabled it to happen. They took Cadbury CEO Todd Stitzer to meet cocoa farmers in Eastern Ghana. Here, he started to understand the difficulties farmers in developing countries face. He saw with his own eyes how vital the stability that comes with the guaranteed prices offered by Fairtrade, is to their lives. He only had to look at our webpages to see that.

So, Britain's best selling chocolate bar is going to be Fairtrade, great. And Cadbury's is committed to investing in communities in Ghana, India, Indonesia and the Caribbean, brilliant. Fairtrade sales, that were worth £700 million in 2008, will increase substantially as imports of Fairtrade cocoa double - another superlative. But it's definitely not the time to sit back and fill our faces full of Fairtrade chocolate. It's time to push harder.

While we're here, lets not forget that the bandwagon that Cadbury's are jumping on has been rolling for years. It's the tireless work of companies like Divine, who have done so much to grow the Fairtrade market in this country, that led to the announcement today that surely will be the first of many. Cadbury's had a nosey into the market when they bought Green & Black's and this latest move shows that the big players realise the future is Fairtrade.

And most of all we salute campaigners who've turned Fairtrade from a fringe movement into a well and truly mainstream affair. So, let's fill our boots, get greedy and call on Cadbury's to outline plans to make sure that all of their products, all over the world, are carrying the Fairtrade mark. You can email them here.

Ian Sullivan is a campaigner at Oxfam