Since at least August 2006, the Ofcom General Conditions require the call prices for 084, 087 and 070 numbers to be given equal prominence in terms of location and format to those for 01, 02, 03 and standard 07 mobile numbers:
3. Customer information and advice: published price lists and websites
3.1 The Originating Communications Provider that is responsible for the retail billing of NTS Calls, 0870 calls and calls to Personal Numbers to the end-user shall publish the usage charges required to be published under General Condition 10.2(d)(ii) for NTS Calls, 0870 calls and calls to Personal Numbers on its website and in published price lists in a way that gives those charges the same prominence in terms of location and format given to charges for geographic calls, calls to mobiles and call packages, including bundles.
At present, the 084, 087 and 070 call prices are hidden in an "other UK numbers" drop-down needing an additional click to access them.
It's probably no coincidence that some of the most common questions in the help forum are:
"How much does it cost to call 0844 / 0845 / 0870 numbers?"
"I bought a Goodybag. Why can't I call 084 and/or 087 numbers?"
Please move the call prices for 084, 087 and 070 numbers up to the top table thereby joining those for calls to 01, 02, 03 and standard 07 mobile numbers.