The choice of CAB is important. An accredited CAB (eg. BSI) should be So, you have a QMS, and the fundamental question is, do we need to formalise used wherever possible and with ISO 9001 one won't be difficult to find
Accreditation , which is issued by a nationally recognized Accreditationn Board (eg. UKAS) is an important confirmation as to the legitmacy of the CAB. To help ensure an international level playing field for CAB auditig standards, National Accrediation Boards have their own international organization, the International Accrediation Forum(IAF). which oversees an ongoing programme of witnessed self-assessment of IAF Members of each other's activies.
A certificate from an accredited CAB will carry three logos
#1. The CAB's own logo
#2. The Accreiditaion Board's logo and
#3 . The IAF logo
If you present an ISO 9001 Certificate to a customer or potential customer that does not carry all three logos , expect to be challenged. Without a plausible explanation, you can expect your approach to be rejected.