When visiting a building, investigators ask a series of predefined questions to all those who answer the door when they visit.  First, they look at whether the person responding to the interview is an “appropriate person” for the interview (i.e., an adult who resides in the dwelling). They then try to find out if that person received television without a licence. If they suspect that this is the case, they give an official warning to the person that anything they say can be used against them in court. They then take an indictment and ask the interviewee to sign it. The person in charge of the investigation can request permission to enter the property and check all the television receivers found there. According to the visit procedures: “The indications of use should be recorded on the minutes of the interview whenever visible (p.B. bowl of the sky, air pipe inserted on the television, remote control on the sofa), as this provides evidence of a possible prosecution and may be essential if the confession were to be challenged later.” . However, the resident has the right to refuse to answer questions (silence) and is not obliged to authorize homeownership. The Secretary-General further explained why the exemption from the credit pension from free licences was not sufficient to mitigate its effects. The amount of the licence fee is set after regular negotiations between the UK government and the BBC Trust.  From 1988 to 2010, the levy was increased annually Prior to 1988, the increase in the levy was made at irregular intervals, sometimes for a few years between amendments. Between April 2010 and April 2017, licence fees remained stable at 145.50 $US per year.
 From April 1, 2020, it will cost $157.50 for a color and $53 for a black and white TV license. Although the TV licence imposes a legal obligation on the BBC to ensure that any address to which a television licence is required is properly authorised, its agents do not have a specific right of access and, like any other member of the public, rely on a tacit right of access to the front door. An owner may revoke the implied right of access to television licence staff by speaking to the BBC and informing them that the right has been revoked; The BBC says they are complying with such requests (although they could still apply for an arrest warrant to search the property), except in Scotland.  As of March 2014, 7299 households had withdrawn the implied right of access. [Citation required] As of December 2015, there were more than 20,000.  The latest figures published for 2018/19 show that the rate of tax evasion is between 6 and 7%.  For 2005/2006, TV Licensing reported that it had “reduced estimated tax evasion to a record level of 4.7%.”  However, this figure rose to 5.1% the following year and remained at 5.1% in 2007/8.  For 2010/2011, the tax evasion rate is estimated at 5.2%.  According to the BBC, “the rate of tax evasion increased slightly to 5.5% in 2012/2013.”  The rate of tax evasion is far from uniform in the United Kingdom, with Scotland having a higher rate than the United Kingdom as a whole.
 One of the reasons given by the BBC for evading tax is lack of money.