Shoe Zone shares down a third as CEO quits after profit warning

Discount footwear retailer with 500 stores in UK and Ireland latest victim of high street crisisShares in Shoe Zone have plunged by a third after the discount footwear retailer issued a profit warning and said its chief executive had resigned.The retail group, which has more than 500 stores in the UK and Ireland, blamed the profits blow on tough high street trading conditions and said it was writing down the value of its 17 freehold properties by £3.1m to £5.3m.Maplin, Toys R Us and