Telecoms providers have previously been urged to do more to promote their cheaper deals for lower income households.
Phone firms row over whether customers are overpaying
Virgin Media O2 steps up cost of living support for low-income households and calls for VAT cut on social tariffs - Virgin Media O2
UK telecoms groups accused of overcharging 'bundle' customers
Ban 'confusing' phone, TV and broadband price rises, says Ofcom