If you want to find reliable ISO 9001 consultants then you might as well want to proceed by doing it the easier way which is definitely through the power of the Internet. Depending upon where you may be from, it is possible for you to find ISO consultants locally which is the best way for you to proceed as working with local consultants would help you relate your requirements with what is available for certification.
If you are from India then you will find quite a few reliable and competitive organisations where you could be getting help with regards to ISO 9001 certification or training programs depending upon what your requirements may be.
Businesses are not all the same however when it comes to specific guidelines such as quality assurance then it can often prove to be a unifying factor so you will have to definitely bear the kind of business that you manage in mind when looking for consultation as there would usually be an appropriate category of ISO training that you will be able to make the most of.
A good example of a reliable ISO 9001 Consulting company would be QGSPL which you can find online at qgspl.com/training/iso-9001-consultants and perhaps consider getting in touch with to discuss your specific requirements with.