Hello my name is ***** ***** I will help you with this.
The Civil Procedure rules state you need the usual or last known residential address.
Therefore you do need a home address.
If you do not know his home address you can apply to the Court and ask that service be effected at his work address
But you need to make a formal application for that
Can I clarify anything for you about this today please?
How do I go about making a formal application to serve him at his work address?
You need to complete form N244
You also need to formally issue the claim and ask that YOU service it
For this you use form N1
You then make an application to Court for service at a different address
Does this help?