I am looking for the scripted font as I know the font below is Clarendon.

Many thanks in anticipation.

Adage Script  Suggeriti da donshottype 

In business for thirty years.
If the logo dates back to then, there were few connected script fonts in this style that could be used to make a logo, but there were still plenty of show-card lettering artists who could create it.
Apparently the company is well known in London and it is possible that someone has produced a font based on the logo.
Link to company that updated the logo in 2013 by adding the words _MASTER REMOVERS_ http://perryht.prosite.com/178025/1849789/clients/anthony-ward-thomas
I found a few fonts with a somewhat similar style, including Jason Walcott's Adage Script, that could be used to produce a very approximate substitute.