CAA Standards Document 20 (Guidance to Examiners Conducting the Skill Test for PPL) states, in Section 3:
Navigation aids, VOR, ADF, VDF and DME may be used, but not at the expense of accurate flying.
GPS or radar should not be used as the primary fixing/tracking aid.
The applicant will be asked to intercept and maintain a track To or From a suitable VOR or ADF. He will be expected to tune and identify the aid correctly and to operate within the promulgated range. He will be required to fly the aircraft accurately and maintain good lookout throughout. This part of the flight will normally take place after the diversion or during return to base aerodrome.
I don't see how an applicant can "identify the aid correctly" without being able to recognise the morse ident. Writing down the dots and dashes, whilst acceptable, could be an onerous task in some parts of the country when the applicant has no idea where the diversion will end up and has to cover all possible ADF and VOR idents.