Major UK fashion chain New Look Group on Thursday posted a 3.5 per cent slip in first quarter same-store sales but added the trend had improved in the last seven weeks of the period. The Weymouth-based operator of around 500 stores, which is the country's third largest retailer of women's clothing, said in a news release total UK sales for the 15 weeks to July 12 climbed 2.8 per cent from the year-ago period.