I think what I am suffering from is organisations who know how to set up their internal security, but can't cope when their subcontractors have different arrangements. I have my own, one-person, company. I have my own data protection registration, policies, automated off-site and on-site backups, anti-malware, anti-ransomware and independent licences for an impressive array of software. Also, I am Windows based while they are largely Mac based. This causes everything from minor irritations to major issues now and again with software and even issues with policies - no I am NOT going to implement YOUR safe working policy because I have MINE, and it applies to ALL my work not just yours.