Written Question No 455/88 by Mr Manuel Fraga Iribarne, Mr Fernando Suarez Gonzalez, Mr Antonio Navarro Velasco, Mr Miguel Arias Canete, Mr Carlos Robles Piquer, Mr José Valverde Lopez, Mr José Lafuente Lopez, Mr Arturo Escuder Croft, Mrs Carmen Llorca Vilaplana, Mr Ramon Diaz del Rio Jaudenes, Mr Pedro Argueelles Salaverria, Mr Salvador Garriga Polledo and Mr Pio Cabanillas Gallas to the Commission: Discriminatory taxation on sherry in the United Kingdom