Beth216, I think that's a really good point and in reality, it's not as if child working can be eradicated. We can though try to force manufacturers to actively work with the countries they're engaging in clothes manufacture. They need to pay fairly and take responsibility - through their own due diligence - that the workers employed are paid a fair (for their country) wage and have welfare facilities.
The employing companies are not based in the country of manufacture and there are levers in place - legal and monetary - to ensure compliance. I audit businesses in the UK as part of my job and there's a raft of questions there about 'onward/out of country' working practices - and that is followed up, not just box-ticking. We might not have control of working practices in other countries but we do have input and ultimate control of businesses here by dint of not working with them if we choose not to.
I know it's not quite the same for consumers but we get to choose who we spend our money with. I've told Johnnie Boden and his crew to stop contacting me because as a customer that spent £££s per year on his stuff when it was manufactured here or in EU, it now isn't and he gets not a penny piece from me.