
Tip of the iceberg
The list is endless really: some more examples would be:
Yes, wrap it up and send it to... nah, we won't tell you!
http://www.hmrc.gov.uk/manuals/ntcmanual/applica_store/ntc0090070.htm
Yes: you employers had better comply, but we won't tell you what about or to...
http://www.hmrc.gov.uk/manuals/echmanual/ech7000.htm
http://www.hmrc.gov.uk/manuals/echmanual/ech3532.htm
PAYE: we're all in it, but we aren't allowed to know what "it" is...
http://www.hmrc.gov.uk/manuals/pommanual/paye46095.htm
http://www.hmrc.gov.uk/manuals/pommanual/PAYE50015.htm
Pretty much well everything below this:
http://www.hmrc.gov.uk/manuals/intmanual/INTM159000.htm
Apparently 'cos they don't hold the copyright...!