The telecoms regulator Ofcom has introduced it needs to cap the worth of 118 listing enquiry calls at £three.10 for a 90 second name.
Market chief 118 118 costs £11.23 for a 90 second name to its service.
Ofcom mentioned suppliers had been rising costs “quite significantly” in recent times and that persons are paying way more than they count on.
Overall 2% of adults or a million folks use a 118 service, rising to four% amongst these over the age of 65.
Ofcom launched its enquiry into the price of 118 calls in May 2017.
It final investigated the sector in 2013 when the worth was about £three for a 90 second name.
At that point it mentioned there was not a lot proof of “bill shock”, which is the place persons are unpleasantly shocked once they obtain their invoice.
Now nonetheless, it mentioned some folks had been struggling “bill shock”.
It mentioned it was now most acceptable to “bring prices down to 2013 levels”.
The second largest supplier, BT minimize the worth for its 118 500 quantity on the 1 June to £three.10 for 90 seconds, down from £6.88.
In a assertion Ofcom mentioned: “We’re involved about rising costs for listing enquiries, and callers paying way more than they count on.
“So we’re taking action to protect consumers by proposing a cap on the cost of 118 numbers.”
Ofcom’s session will run till 22 August with a choice due on the finish of the 12 months.