On every HD recording that I have, there is a programme icon of ENC displayed on the detailed page (just before selecting Play). I only have one SD recording (from More 4) and the ENC icon is absent.
On Page 14 of the user guide (which is about setting up recordings) it suggests that ENC means "encrypted programme" which clearly is not true of any Freeview recording. I cannot find another meaning elsewhere
So what does ENC really mean?