Having just finished part two of the work study into QA and Laboratory Accreditation MTEB UK SEMINARS 2016 II v03- QA Lab Accreditation.pdf ( http://trewmte.blogspot.co.uk/2016/10/qa-and-laboratory-accreditation.html ) I came across this cracking article by Karin Athanas, Program Manager at the American Association for Laboratory Accreditation (A2LA) titled "Accreditation for the One-Person Organization - The smallest laboratories can teach us the biggest lessons." ( http://forensicfoundations.com/resources/Documents_CLR/2016_10_3_SUMMER.pdf )
Basically Karin's article helps us understand that one, two or three person/s organisation/s should not be put off but can and should apply for ISO/IEC 17020 and 17025 as the requirements are not insurmountable, particularly when it comes to allocation to whom the quality manager's role, audits etc. will be allocated and deemed to be responsible. I also read this to mean that ABs might need to widen their scope to appreciate many roles in a accredited system can be held by one person.
Karin's article is a recommended read.