I noticed that on the Internal Audit 2016/2017, which was only published 13/12/2017, that in
Section 7 Payroll Control - Has PAYE/NIC been properly operated by Council as an employer
The answer is "Clerk is self employed".
From everything I've read the parish council should be registered as an employer with HMRC and the clerk should be an employee.
Does it make any difference that the clerk works for 6 parish councils?