The legal requirement for a UK TV licence is that you must have a TV licence if you watch or record live TV programmes as they are being broadcast on any channel or service, or if you use BBC iPlayer to watch or download on-demand BBC programmes. This applies regardless of the device or method used, including terrestrial, satellite, cable, or internet streaming. The requirement is mandated by law under the Communications Act 2003 and related regulations, and it applies to any device capable of receiving TV broadcasts live or simultaneously.
You do not need a TV licence to watch on-demand or catch-up services from other providers like Netflix, Amazon Prime Video, or All 4. The licence typically costs £174.50 per year for colour TV and £58.50 for black and white sets. A single licence covers all live TV watching in one household at a given address, but if multiple tenants with separate tenancy agreements live in one property, each may need their own licence. Failure to have a required TV licence can lead to a fine of up to £1,000.
You also do not have to allow any Crapita employee into your premises. I would advise anyone to just tell them to go away.