Helen Rawlinson produces a lovely line in retro lampshades such as this Wide Drum Parade Lampshade.
The Parade design is a 1970s flower design, available in a choice of orange, blue or white. The shade measures 23cm wide by 15cm high. The lamp base is also available to buy with the dark wenge version shown here currently on offer at £35 (it usually costs £46). The shade on its own costs £39.