Is there a legal requirement to comply with or be certified to ISO 27001?

There is, generally, no direct legal requirement as such.  Organisations choose whether or not to implement the requirements of ISO 27001 based upon the benefits that would be gained by doing so.  

However, you should pay close attention to any contractual obligations you may have for protecting the information of clients and other stakeholders.  

There is an increasing trend where customers require third party suppliers to implement or certify to ISO 27001, thus making it a legal requirement, by way of a contract.

Thank you for a very informative overview of the components in the revised Standard.
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I thought the training was very good. It was clear and logical. The trainer was very knowledgeable, approachable and friendly, which makes it easy to stop and ask questions or to clarify a point. I was particularly impressed by his explanation of why we need to be mindful of the language we use and what the standard is actually asking for; most of it is common sense, but understanding what it actually means and what is required is key, so that really resonated with me.
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