B&Q had some rectangular raised bed kits in. Basically 6 struts,2 long pieces and 2 short pieces plus necessary screws. Depends on your DIY level. Definitely use some sort of tub,container, raised bed rather then plant them through gravel. You could try woodland strawberries too but they do spread x
Posts
Looking good though, @pdolinaj
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.