So you believe the Capita employees can fine you on the spot?
No warrant? No evidence? No prosecution? No court case?
Only a court can issue a fine of that sort. The police have limited powers to serve on the spot fines, but not a private individual from a private company such as Capita.
The capita employee would have to submit their evidence to the court and they would have to decide if you broke the guidelines and deserve a penalty.
Over 92% of prosecutions brought by the BBC end up in the BBC winning but a lot of them are by default as the other party doesn't fight it, ignores the letters, doesn't understand the law, can't afford a solicitor etc.
There's a lot of information about the shady practices of the Capita Goons on line.
Factual and informative wise the BBB is one of the best places to start:
https://youtube.com/playlist?list=PLOu1C4wHKjG5pAffSbNB2F7-Wh00IqVCM&si=XeZ2f3wUjkPT55No
Ultimately there's a lot of misinformation and fear mongering by people surrounding the license fee.
The simple truth is:
You don't need to let the Jumped Up salesman in unless they have a warrant.
You don't need to declare no license needed, you can if you wish, but there's no law saying you must.
You need to pay a license to watch LIVE as
broadcast TV (recording it counts as watching)
You need a license to watch iPlayer.
You don't need a license to own a TV.