Tesco's turnover will increase by £30bn to almost £74bn within five years as its store numbers double, according to IGD.

Most of that growth would come from overseas expansion, it said. By 2012, a third of Tesco's turnover and two-thirds of its floorspace would come from the international division, said IGD researcher Ben Miller.

"Overall, Tesco's international business will treble in size to £24bn," said Miller. "Suppliers should be looking closely at where that new space will come from to maximise sales. Tesco stands out from the big global retailers due to its ability to act local, so suppliers who can tailor products for the different markets, as well as for different formats, will be most likely to reap the rewards."

IGD predicted that Tesco's Asian store numbers would grow from 636 to 1,858. Eastern Europe and Turkey would grow from 543 stores to 1,164 and there would be 950 Fresh & Easy stores in the US in the next five years.

UK and Ireland store numbers would grow from 2,083 stores to 2,656.

Another key focus for suppliers would be sustainability, said Miller. "Tesco has put environmental responsibility at the epicentre of its corporate strategy," he said. "Suppliers who can help Tesco deliver on these targets will be well-placed."