S6Clothing are a brand of Silver Oak Marketing Ltd, and according to the Silver Oak website they make licensed non-branded football shirts, hats, scarves etc for Man Utd, Chelsea, Tottenham plus a few other domestic clubs, also official International Merchandise for Wales and Northern Ireland. Nothing on the site for us but could possibly have found our kit manufacturers for this season. Very underwhelmed if correct.
http://silveroakmarketing.yourwebshop.com/shop/category/licensed-product?cid=2008#saveFilters=true