All perfectly Ok to use the ELC for a PPL. In the Navy you have to be aircrew to use the ELC for the PPL, however if you are not aircrew you can still do it if you have a Personal Development Plan claiming that you wish to train as a flying instructor (and therefore able to offer something back to the service taking matelots for flying lessons).
Have a look at
www.enhancedlearningcredits.co.uk
Cheers
MFWF