ISO 9001 in its latest version of 2015 does not require a quality manual. So, a quality manual is no longer mandatory. However, as a consultant working with organizations, I recommend developing a quality manual.
Since it is no longer mandatory, we are free to design its content. I recommend designing a document that presents the quality management system. Presenting:
your organization and its history
the scope of the quality management system
its quality policy
its model of working based on the process approach
In plain English would be something like:
Who are we?
To whom do we work?
What are our priorities?
How do we work?
The following material will provide you information about the quality manual: