Children's wear clothing comprises of clothing, designed for children under the age of 14. It is a sector which despite of the pressure on disposable income, expects the market to be most resilient by volume. Parents are reluctant to cut back on Children's wear. Purchases are more need-driven and the market is value-driven, allowing for high volumes – supporting volume recovery. One major factor that will boost the Children's wear market is the current demographic trend towards higher birth rates. In 2010, the total UK market for Children's wear was valued at £5.91bn, increase by 6.5% from 2009. Further, Verdict Retail forecasts the Children's wear market to grow by meager 1.7% in 2012, underperforming total clothing due to lower inflation. This article highlights the findings of a case study on Marks & Spencer (Bond Street, London) a leading UK brand, whose market share, fell down considerably in the Children's wear Department. The suggestions and consultancy have been provided for the brand, to improve their market share in the changing and volatile environment which was once, a market leader in the Kids-wear segment in UK.