"I think that must be Maison Blanc"

 Maison Blanc is a famous French patisserie and cafe in Oxford; it is now the first branch of fifteen, all serving luxurious cakes, breads and savoury snacks.

The French chef Raymond Blanc established the Oxford Maison Blanc in 1981 with his first wife. He currently runs Le Manoir aux Quat' Saisons, a hotel and restaurant in Oxfordshire which has been awarded two Michelin stars.