Communicating the ethos of corporate codes of ethics in the UK and the USA

Business ethics has been a consideration for corporations in the USA since at least the early 1960s, whilst in the UK this interest in business ethics appears to be just over 20 years old. In a survey of the top 500 companies operating in the private sector in the UK and the USA, it would appear that corporations operating in the UK have embraced the ethos of codes of ethics differently to their USA counterparts and that this difference may well be in line with their different adoption rates over the last 50 years of the need for business ethics in organizations. The USA seems to lead the UK in most areas, except when it comes to ethical audits and incorporating the ethics code into the strategic planning process. Could this omission in respect to strategic planning be the Achilles Heel of US business?