cough - as a technical aspect, CHT is an NDB, not a VOR, so it doesn't have radials associated with it. You can only fly QDMs and QDRs from an NDB which are infinitely less accurate than a radial (and can be affected by weather conditions.)
Gonzo - as some of the other contributors have said, you cannot legally fly a SID (in the UK, anyway) if the primary navaid is U/S. Whether the a/c is FMS/GPS etc equipped doesn't come into it - I think perhaps a small slip-up in LATCC?