Well said, Andy Warren.

If only.

Ethics comes from an individual considering their moral position, and can be assisted but not defined by a "Code". It is about being aware of the wider context and the implications for other people of what you do, in addition to anything that laws, regulations and employers' terms say.

If, to become a member of a professional body, you have to be informed about and to reflect on the ethical dimensions of your work, you can be expected to notice and avoid or query ethically questionable behaviour, and be challenged where you have failed to do so. This is not about enforcing a set of rules, it makes it possible to debate whether you should have acted differently despite rules, or the lack of them.

An employer may set a "code of ethics", but the idea is that the individual see things from a perspective far wider than their current job, and get better at doing the "right" thing. It's all very fuzzy and grey, and yes, we learn it from childhood but get better by continued learning, considering and reflecting.