If in doubt go to the act-
Communications Act 2003
Part 4 Licensing of TV reception
363Licence required for use of TV receiver
(1)A television receiver must not be installed or used unless the installation and use of the receiver is authorised by a licence under this Part.
(2)A person who installs or uses a television receiver in contravention of subsection (1) is guilty of an offence.
(3)A person with a television receiver in his possession or under his control who—
(a)intends to install or use it in contravention of subsection (1), or
(b)knows, or has reasonable grounds for believing, that another person intends to install or use it in contravention of that subsection, is guilty of an offence.
In other words the crime is USING the tv to receive signals, not owning the tv.