French supermarket chain Carrefour is test marketing a new fascia for its Champion supermarkets.

Six stores in Britanny - including three around the Breton capital Rennes, one in Vannes and another in Carhaix - have been converted to a new Carrefour Market format.

"The new look stores re-opened in October," the multiple told just-food. "It is far too early to say what will come of it."

Carrefour operates 1,030 Champion stores across France as well as some in Belgium.