This is no longstanding legacy situation, as also included are the newly introduced Benefits Cap and the Employment and Support Allowance, which replaces Invalidity Benefit.
This comes at a time when a government consultation on plans to prohibit businesses from using customer enquiries phone numbers which include a Service Charge to the benefit of the person called is coming to a close. See - Consultation … closes on 1 November.
When these two items are taken together, they show a “re-balancing of the economy” that some may find distasteful. Consumers of private sector services are to be protected from being subjected to Service Charges, whereas those requiring the services of the state continue to be subjected to fees.