I'm flying YYZ-LHR-YYZ soon (flying out in a couple of days time) and can't seem to find any info on LHR T2 lounge access for Diners Club corporate card holders.

I don't have *A status any more, so can't get in to the new MLL or United Lounge (which looks very nice.. *sigh*) - it seems there are also arrival lounges, but I can't tell if any of these are open to DC holders...

What lounge options do I have at LHR T2 using my Diners Card?