Person Name Format incorrect for an Employee

Summary:

Person Name Format incorrect for an Employee

Content (please ensure you mask any confidential information):

For UK employees the name displays as First Name Last Name. For a particular UK employee it it showing as Last Name, First Name

Why would it not be applied to certain employees even if the person's name data is correct ?

Also, in Redwood pages it is displayed fine but in the salary reports for this particular person its also displayed incorrectly as Last Name, First Name ?

Version (include the version you are using, if applicable):
26B

Code Snippet (add any code snippets that support your topic, if applicable):