Show 'company' column on 'employees' screen Merged

We have > 12 companies under a parent company agreement. We have employees who share the same physical 'location' but are co-habiting companies (sometimes 3 or 4 companies branded in the same physical building/hub). Our HR admins are centralised so need to see quickly which company the employee belongs too. Its not always a 1 to 1 relationship between location and company