You�ve made that up. Openreach plc doesn�t exist. You know Openreach is owned by BT. It�s not a plc and no employee would put that in their signature.
I am not sure if you are referring to BT or Openreach having the PLC info in their sig, but Openreach does have it in some of their email sigs due to I have several emails from openreach that have it like the following:
Regards
*** NAME REMOVED ***
Fibre Enquiries team, Openreach
This email contains BT information, which may be privileged or confidential.
It's meant only for the individual(s) or entity named above. If you're not the intended recipient, note that disclosing, copying, distributing or using this information is prohibited. If you've received this email in error, please let me know immediately on the email address above. Thank you.
We monitor our email system, and may record your emails.
British Telecommunications plc
Registered office: 81 Newgate Street London EC1A 7AJ
Registered in England no. 1800000
I have emails from people at Openreach who all have that same above sig, the only emails from BT that also have that sig is BT Care, even the Exec Complaints staff have their own sigs and have no BT info in it.
So I can see how some people can get confused.
TBH, I don't care who owns who, as long as stuff is fixed when it breaks.
Paul