Dr. Martens has announced that, further to a statement made on Oct. 24, 2013, an investment vehicle backed by the Permira Funds has completed the acquisition of R. Griggs Group, the parent company and licensee-in-perpetuity of the Dr. Martens brand, for £300 million (€364.2m-$493.5m). In addition, the iconic British brand announced strong Christmas trading figures for the month of December. Global sales were up by 20 percent versus the prior year while total retail sales in the U.K. were up 65 percent, or 20 percent higher on a comparable basis. Group retail sales grew by 69 percent, or 15 percent on a same-store basis. E-commerce increased by 36 percent. The company said that sales were good in all regions and all channels and there was no need for early discounts. The new year has started well and the company expects the rest of the year to be strong.