pg. 22 states subsidiary companies, but the ownership structure is not clear: "The boards of directors for the following companies1 have approved this Statement:• British Telecommunications plc• BT Australasia Pty Limited• BT Global Services Ltd• BT Lancashire Services Ltd• BT Ltd• BT Managed Services Ltd• Communications Networking Services (UK)• EE Ltd• Mainline Digital Communications Limited • Openreach Limited• Plusnet plcThey all delegated authority to Philip Jansen to sign this Statement on their behalf."
I'm wrong: this should be a "yes"
Pg. 4: "You’ll find details of our company structure on our website. BT Group plc is the listed holding company for the BT Group of companies. British Telecommunications plc (BT) is a wholly-owned subsidiary of BT Group plc and encompasses virtually all businesses and assets of the BT Group."
As the comment and Anna mentioned on page 4, it is a "yes". Fixed.