This is a pretty wave design vintage braid with centre strip/core that was manufactured in now ceased textile factories & mills of Derbyshire/Nottinghamshire. 
It was specifically made for lampshade makers though can be used for other soft furnishings, clothing and crafts.
Length: 1 metre
Width: 
10mm, except two at 12mm (grey-blue and light salmon cream)
Sold in 1m lengths.
Continuous length for purchases of more than 1m.