Luxury clothing and leather goods company Mulberry Group Plc on Wednesday posted a wider full year loss despite a slight rise in sales and said it plans to raise £3.5 million through an open offer. The Bath-based firm reported a pre-tax loss of £2.1m for the year to March 31 versus a pre-tax loss of £1.7m in 2002 as it was hurt by costs linked to the resignation of former chairman and chief executive Roger Saul in late 2002.