Ditto the above comments.
A relative of mine, who was over 75 and lived alone, died.
Over 75s are exempt from needing a licence, however, within a month, the TV Licence people had somehow latched onto this and sent the standard, threatening 'Present Owner' letter.
As executor, I advised them that the house was empty and unoccupied (so no licence needed). They replied that they would take that onboard but reserved the right to pester with reminder letters periodically. Which they duly did.
I just ignored them.