I don't think that you should add anything further as this just means that a signature is needed. Wihtout the signature, service has not been acknowlegded thus is not effective.

I have not seen the expression "Official report of service" being used. "Acknowledgement of service" which is the document by which a defendant in the High Court confirms that he has received writ of summons or an originating summons.

ISSUE & SERVICE :
Once a writ has been issued it has to be delivered within a certain time limit.

SERVICE & ACKNOWLEDGEMENT THEREOF :
Likewise, once served, a writ has to be acknowledged. There are strict time limits to be respected with regard to such acknowledgement. D must acknowledge service within 14 days & indicate whether or not he intends to cpontest the proceedings giving a 'notice of intention to defend' - O12, r3. If he fails to do so, within the time limit or without giving notice of intention to defend, then P can enter judgment immediately, O13.

Thus the signature is not compulsory. D (defendant) could decide not to sign. The acknowledgement would not be effective and so P (plaintiff) could enter judgement in default. Not compulsory therefore - but probably recommended for the most part!

Nikki