The following web page provides more information on the different number types and what they call to cost.  It also details more information on the changes made on 1st July 2015 with regards to 084/087/09/118 telephone numbers.

http://www.saynoto0870.com/costofcalling.php

The page also shows the Access Charge for most telephone providers.

The page is regularly updated, the latest changes were actioned earlier today.

Any feedback about missing providers or out of date prices is always welcomed.

Been caught many times. I used to think it was only 070 you had to worry about. It'd be nice to see the out of allowance mobile number prefixes - if these still exist - ?

Source: Three Price Guide

Outside of inclusive allowances:

077442-9, 077552-5, 079118, 078931, 079112, 078745, 079784, 078744, 078939, 078223, 078220, 078920, 078727, 078922, 078930, 078921, 077001, 079780, 075201, 078730, 079788, 078221, 078644, 078224, 078226, 079785, 078225, 078933, 079789

Source: Vodafone Premium Call Charges

Up to 50 pence per minute:

07700, 077442, 077443, 077444, 077445, 077446, 077447, 077448, 077449, 077552, 077553, 077554, 077555, 079112, 07624, 07781, 077977, 077978, 077979, 079117, 079112

Up to 34 pence per minute:

078744, 078930

In short, which are the current numbers that despite 07 can be regarded as non-mobile?