Apparently the disks were supposed to be sent by the HMRC "internal mail", which seems to be a contract with TNT; so they wouldn't have been delayed by the postal strike. Of course, it's possible that they never got on to TNT's truck and are still lurking somewhere in the Washington child benefit office. Equally, I suppose, it's possible that they have ended up in any of the offices that TNT serves.
There are reports of e-mails between the National Audit Office (NAO) and HMRC. According to these reports, the NAO told HMRC something like "We don't need all those bank details and stuff; just send us the kids' names and the National Insurance numbers." But HMRC said it would be much too expensive to strip out bits and pieces from the data; they would have to send it all just as it was. As an ex-employee I find this entirely credible: it's what our managers used to call a "value for money" approach. Next time you hear that phrase from a public service manager, remember that this is the sort of thing they're talking about.
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