The sites registrant is

Gloss Creative Recruitment
46 Haxby Road
York
YO31 8JX

Tel. 01904 332970

Put the fax number into Google, as in the following (click them): "0113 2095600" and "0113 209 5600"

There are several other businesses sharing the same fax machine/number. Other businesses have 0113 2095xxx numbers at the same address (see Google search here), so I assume that Gloss Creative Recruitment will be the same.

That website shows, as expected, a Leeds address:

1A Tower Square, 33 Wellington Street, Leeds LS1 4HZ

FAX: 0113 2095 600    Telephone: 0870 321 9788

One of the hits a Google search for that fax number (differently spaced as 0113 209 5600) is THIS - which is clearly a different company name. 

However, as can be seen at the end of page 3, the address is the same:
Alun Davies, Rockliffe, 1a Tower Square, 33 Wellington Street, Leeds, LS1 4HZ
Tel: 0113 209 5544 Fax: 0113 209 5600

So, different company name but the same address, same fax number but a different telephone number.

0113 209 5544 - worth a try!

However, reception for the building is http://www.regus.com/Files/Infomedia/locations/index_2002.asp?keyword=108
Main Tel: +44 (0) 113 209 5500
Main Fax: +44 (0) 113 209 5600

If you look at the fax number, it is the same as the one for Gloss.
It is also the same for Rhetoric Political Planning Advisors in the same building. But their number is 0113 209 5770
So as a start, it looks like the number will start 0113 209 5***