Pebsham pupils learn that Fairtrade is a better buy.

"They guarantee a better deal for Third World producers."

It is morning assembly at Pebsham Community Primary School.

Indoors it's a "Sunshine Mufti Day". Outdoors it's pouring...

Sainsbury store duty manager Kevin Davies, accompanied by company spokesperson Suzanna Upton are visiting during Healthy Eating Week.

In addition to explaining Sainsbury's Fairtrade credentials, they have brought enough Fairtrade bananas and tangerines for the entire school to eat healthily.

Rows of children sit cross-legged on the floor of the school hall as Kevin explains that in 2000 Sainsburys were the first supermarket chain to stock Fairtrade bananas.

Bananas are Sainsbury's biggest-selling line and the company now buys them only from Fairtrade sources.

Under the system, farmers receive the full cost of their fruit plus an extra 50p per box. The money is used to improve roads, purchase computers and sports kit, equip hospitals and train farmers how to reduce dependency on chemicals.

The average Briton eats four bananas a week, the children learned.

Images of communities in St Vincent's and St Lucia and Colombia flashed on the screen as Mr Davies told the children: "A thousand bananas are sold in Sainsbury's every minute - generating about 4m in Fairtrade payments each year."