website: www.tetenal.co.uk

Checking on Google, their old numbers of 0116 263 0306; Fax: 0116 263 0087 are no longer working.

192.com however gives us a few more to try.

0116 289 9473 - cuts off
0116 289 9474 - rings out (no message)
0116 289 4315 - rings out (no message)
0116 282 5989 - rings (VM message)

BT gives same numbers but gives "Tetenal Ltd Photog Gds & Manufactures. Tel: 0116 2825989"
118118  gives same numbers
Yell gives 0870 only

Give them a try tomorrow & let us know the outcome. No indications on 192 as to what dep't is on any of the numbers.