A lad I know from working at Maplin is flogging their shelf panels on facebook since the administration. He'll sort you out.

I won't do that. If one of those dividers fail and somebody gets injured you risk being held accountable. Crap always flows downhill, so if anything bad happens you risk having to pay for it. I always refused to perform weldings with any potential to cause injuries in case of failure, citing "health and safety concerns" or "lack of relevant qualifications"

>>2454
Have to agree. If you're not qualified to install something that could potentially hurt people then don't let yourself get talked into doing it. Not just for your own sake but out of essential moral principle.

Another vote for 'fuck, no!'
a) block walls just aren't rated for loads like that, things will just tear out
b) it will be your fault.

further - especially long unsupported poles at knee and shoulder height. Customers are going to be battering into those, swinging on them, climbing them, even without your heavy stock hanging on them. Without some vertical support at the non-wall end, this reeks of failure.

>>2452
As other lads have said, don't take on the responsibility. Get something off-the-shelf which will come with a certificate telling you exactly how much weight you can put on it.
Shop around industrial racking suppliers to try and find something suitable.

This seems to be the sort of thing you're looking for:
https://www.rapidracking.com/en/rra/pallet-racking-'d'-bar-racks-ndbar1?gclid=CjwKCAjw06LZBRBNEiwA2vgMVfuszrE949JqgD2o98SA3e5nauigcaZ87VI4IclMXDdT-U0kk3R2rxoCjRsQAvD_BwE

Ok I have taken everyone's replies into consideration (much obliged), and modified the plan to this.

I will also hire someone else to do the installation to make sure it's secure. Only ordered the parts for two dividers for now. I'll give them a stress test after installation and if all seems ok we'll go ahead with the remainder.

>>2458
This is great and I appreciate the link, but
a) they don't extend far enough, and
b) the quantity needed makes the total cost about 4-5 times what we have to spend