For the past few days I've examined the labels of whatever I have been wearing. I've checked the ethical and sustainability record of the companies and brands. If their websites don't address these issues, I have contacted them.
Well, I understand that in many cases customer feedback can go directly to the junk mail folder 
But today I received feedback from one of the companies, Lily&Lionel. The scarf I asked about was made in India. Here is the reply:
"Hi Frugal
We do understand your questions over ethical issues and we are equally concerned over this matter and have always taken steps to ensure that all of our supplies are totally satisfactory in all aspects.
Our factories are visited by us and inspected on a regular basis and they are all compliant on salaries, health and safety conditions, employers benefits and age. We have been working with them all for many years and you can be assured that we are most careful on our production and only proceed with caution and constant checks.
We are currently in discussions regarding the addition to our website of ethical production matters and will be implementing this in the near future.
In the meantime, we can advise that we will never compromise on our policy standards so you can certainly feel secure in the purchase of Lily and Lionel products"
Prompted by the response (and looking forward to a much more detailed webpage), I contacted another company whose cardigan I'm wearing today.
The information and feedback I will get will definitely affect my future purchasing decisions.
It does not take very long to write these inquiries - please do join me in nudging the brands!