in case anyone is wondering what my workflow was for the above it went like this (assuming email address of jess@abc.co.uk)

1. whois on domain name (from email address) revealed ownership of abc.co.uk by abc ltd

2. lookup of abc ltd at companycheck.co.uk revealed a director named Jess (with link to further info)

3. link from step 2 went to http://company-director-check.co.uk revealed everything but telephone number

4. no telephone number anywhere for abc ltd but one of the other companies revealed is listed at the same address as the Director called Jess and that company has a telephone number advertised.