The Scottish Working Woods label is a guarantee that a woodland product contains at least 90% Scottish grown raw material and that the raw material has been harvested sustainably or is from a sustainable source. The label can be used for any raw materials and products that derive from the woodland. These include: timber; furniture; crafts; food and drink made from wild harvested ingredients; plant extracts; and seeds. http://www.scottishworkingwoods.org.uk/
You can use this forum to find out about SWW products or certification.