Nice quality sheets and duvet covers available from Index (on the left, approaching Robinsons.) I bought a set including pillow cases and a comfortable separate duvet when they first opened. Very comfortable - decent thread count, good choice of colours and patterns too, and they have washed and worn very well. I bought a second set a couple of months ago and they're every bit as good. The duvets and covers have ties at each corner, with more in between, so they don't slip when in the cover, which also has a zip closure. Probably not cheap by Big C or Tesco-Lotus standards, but the sizes are more generous, and the quality is much better.