SCOTLAND. 2012. Designer Ken Kennedy, Harris Tweed Hebrides, Shawbost Mill, Isle of Lewis, Outer Hebrides. The entire production process of Harris Tweed is protected by the Harris Tweed Act of Parliament, 1993 — this outlines the conditions in which products can be made and labelled as authentic Harris Tweed. A reference yarn is used to check all yarn batches for colour to ensure quality.