BRE has played a leading role in the development and implementation of methods for the grading of structural timber by visual and mechanical means. This Digest reviews current developments and presents new information in the grading of structural timbers in accordance with BS5268:Part 2. It also presents the grade stresses for sweet chestnut, for larger-section Douglas fir and for Trussed Rafter grades TR26/TR20, together with a review of the density values for British grown Sitka spruce. The information is published in this particular form to support the consultation process which will lead to the revision of BS 5268:Part 2, and to make it available for application in the design of timber structures. 6 pages.