The I-Cube (don't try googling it - it will frustrate you ;) is a system that is light weight and easy to assemble and manage. The cost was seriously much less that is generally acceptable (not sure how it will translate to ££.) BUT they did mention that US big-box stores were seriously interested... so who knows.
There was a seriously lucky lady on UKS sporting a storage shelf system her DH had purpose built. I think she had most of us reading in tears... I adore my husband, but oh how much more adoration would be his if he was in any shape or form a Jedi Master of DIY.