Lion do a racking system, TP. Have a look at their online catalogue.
I had to go for as cheap as I could get it, and I have those repositionalble shelving brackets. I've wrapped the brackets in foam sheeting to protect the moudling. However, as Merlin so wisely points out, it's much better to have something at the end to prevent avalanches!
The vertical supports on my system are attached to a hard wall using suitably lengthy screws 'n' rawlplugs (your local hardware merchant should be able to advise you on the correct fixings to use.)
Big Tip

From a safety perspective, the higher up the rack you go, put thinner mouldings, box slips and fillets: heavier mouldings on the bottom. Also, it is helpful to put your fastest-moving mouldings at the most easily accessible rack levels.
If I had my time again, and I had the budget, I'd go for a system like Merlin's (above).