Can you help us to help you? 

Have a look at Guide to finding geographical numbers.

Google gives the website as www.page-moy.com.

They have 2 offices in Leicester. The addresses are as follows:
Page & Moy Ltd
136-140 London Road
Leicester
LE2 1EN

Tel: +44 (0) 870 832 7000
Fax: +44 (0) 870 010 6449

Page & Moy Ltd
Abbey House
Retail Travel Division
56 Burleys Way
Leicester
LE1 9GZ

Tel: +44 (0) 8700 10 62 42
Fax: +44 (0) 8700 10 62 11

A Google search (see here) gives a few, one of which looks like a switchboard number:

0116 250 7000

. This will probably be the number 0870 832 7000 translates to. Note the last few digits are the same. 

It seems that all P&M numbers begin 0116 2507. There are too many to mention here, so see what Google can come up with.

It is under the Site Related section. I agree, more information on the home page.

Also, I think people may be confused with the 'Search' for the forums and the 'Search to find and alternative number'.

Let us know what number(s) you have success with and what numbers you don't.