See what happens when you grow vegetables in compost & sand - YouTube
The Niche Nursery: Coarse Sand is Horticultural Gold.
Can I mix left-over sand into my soil before planting new grass? - pennlive.com
Horticultural Sharp Sand For Improving Drainage in Soil and Compost and Laying Paving Slabs and Path 1 x 20kg Bag by Thompson and Morgan : Amazon.co.uk: Garden