@d72d5211 Losing some documents is normal. Losing most of the ones an individual asks for is dodgey.

Can you get the ear of someone who does a lot of OIAs to figure out if this is general dodgey (culture of denying requests) or specific dodgey (here be explicit corruption)? 

 @8bcdf6f1 I've enquired with an investigative journalist who appears to specialise in OIAs related to technology...