T3 lounges : Phone/meeting rooms
I have a relatively long connection LHR T5-T3 next week and I'm hoping to be able to do a few hours of work from one of the OW (BA Gold so have access to the BA F/J, CX F/J and AA F/J) or PP (No.1, Club Aspire) lounges.
For food/drinks/ambiance I would usually just go straight to the CX F lounge - but this time I need someplace quiet and private to make calls for a few hours.
Do any of these lounges have private phone booths (like in the JFK Flagship lounge) or similar areas suitable for work involving non-public phone calls?