After two years as the most featured of the top five soft drinks brands on promotion, it accounted for 33% of space last weekend.
The brand was on buy-one-get-one-free and x-for-y promotion across all five retailers. The only other soft drinks brand to achieve that last weekend was rival Pepsi.
However, the battle for space between the once-dominant carbonates and still drinks is already hotting up, with Pepsi and Evian sharing second place with 19% of activity apiece.
The two soft drinks brands used a variety of promotional mechanics including buy-one-get-one-free, save and x-for-y. Pepsi was featured in all five retailers, while Evian was on offer in all except Asda.
Robinsons took fourth place with a 15% of promotional space. Like the other brands, it used a combination of mechanics - x-for-y, extra-free and save - and only Sainsbury's did not allocate secondary space to the brand.
The remaining spot in the chart went to Innocent with a 13% share of space that was just enough to keep Schweppes and Tropicana out of the top five and in joint-sixth position. Innocent's smoothies were on offer in Asda, Somerfield and Tesco using the save mechanic.
Looking back at last year's performances, Coca-C0la remains the clear leader in the category, although its share of activity dropped six percentage points from 46% at the end of 2006 to 40% in 2007.
Robinsons, however, has increased its share by four percentage points from 18% at the end of 2006 to 22% in 2007 to retain second place.
Pepsi has maintained its overall third-placed position, jumping three percentage points to 16%.
Schweppes jumped to fourth place by increasing its share of space four percentage points to 11%. Sprite, meanwhile, took the final place in last year's chart with a 10% share of space, knocking Lucozade out of the top five.