Quick question, what does “For O. I/o Records.” Mean?

Hi Everyone,

I was hoping someone would be able to help me with this question. There’s a block stamp on a service record, of a family member. It reads exactly (capitals and all) “For O. I/o Records”. Would anyone be able to help me find out what this means? If it helps, here is all the information about the form:
Army Form E 531.
Part VI.
15.9.1939 (the day after his enlistment with the Royal Warwickshire Regiment, on the same day he was posted to 165th O.C.T.U. Dunbar)

Thank you for your help.

Alec

 

You could be right, potentially there is an ink smudge. Hard to be certain.

 

I've seen I.O. for intelligence officer many times, but with the slash it's almost certainly I/c as Owen has it.

If you want this confirmed, please post an image of the paper itself.

Edit: perfect timing: It's I/c with an inkspot.

 

You guys are great! Thank you for your prompt replies.