i've tried accessing the lounge before at Newcastle on a domestic pre CE with stopover - was told not possible.

In contrast - at LHR yesterday I was able to access the lounge for a domestic flight after an 8 month stopover. Think that was because I rang up though about baggage allowance as it was displaying wrong in MMB and they added the remarks 'Business' to the booking as it was in U. On my BP therefore it said 'Business' (not 'Business UK') in the comments box and after a slight hesitation I was let through