With the plans to bring the Bayeux Tapestry from France to the British Museum later this year under the spotlight, the subject on the Post this week is embroidery - since  the Bayeux Tapestry is not actually a woven tapestry, but a 70 metre long embroidery worked with wool thread on linen. David Hockney has criticised this as "madness" due to the fragility of the artefact which is more than 900 years old, thus highlighting the issues surrounding preservation and conservation of textiles.