In reply to a post by 4M2:

Good thing that you don't have to call the likes of the Department of Work and Pensions then! It's essential to hold otherwise one is returned to the end of the queue if you hang-up and try again a little while later

There is a standard number hiding behind all non-geographic numbers.
http://www.saynoto0870.com/numbersearch.php
0845 8500293 turns up as 0161 904 1233

In reply to a post by professor973:

There is a standard number hiding behind all non-geographic numbers.
http://www.saynoto0870.com/numbersearch.php

Obviously, but not all are lookable up on SayNoTo0870.

Sometimes one is forced to use the 0845/0870 #. Having these #s inclusive in your plan saves worrying about them and bothering to try and look them up on SayNoTo0870.