Not sure which law you are referring to, but the The Communications (Television Licensing) Regulations 2004 includes Definitions for the purposes of the Communications Act 2003 and the Wireless Telegraphy Act 1967
Meaning of "television receiver" 9. - (1) In Part 4 of the Act (licensing of TV reception), "television receiver" means any apparatus installed or used for the purpose of receiving (whether by means of wireless telegraphy or otherwise) any television programme service, whether or not it is installed or used for any other purpose.
So it's clear that it's the *purpose* for the apparatus rather than the
*capability* that's important.So, with respect, I think you are in error.