All the local b2b directory will help you to get referral visitors towards your site and saves your investment on PPC, specially for high competitive keys. UK business directories are available according to county wise. Add new UK company profiles to this directory as per the counties your targeting and get authorized link back to your site that is going to enhance your websites SERP in Google.
Add your Business Profiles to UK’s largest online Business to Business Directories.
Here Is the fine tuned list of UK B2B directories -