What if you don’t know the answer?

What do you do if you are caught out in the middle of a media interview by a question you can’t answer?  It can happen to anyone – you’re not an encyclopaedia.  If you don’t know the facts when a reporter calls, admit it – offer to come up with the information later if you can.  Don’t lie and make something up!  If you are giving a ‘live’ interview for broadcast, this obviously won’t work.  Just don’t make a big thing of it – tell the interviewer you don’t have the specific answer in front of you, and try to give a reasonable guesstimate.  Then move on to make a related point (‘but I’ll tell you what I do know, and that is …’)