I understand that the CX F lounge at LHR T3 now has scheduled capacity restrictions in place during certain pre-determined hours, accepting only CX passengers (for example, apparently from midday until 17:00). But I have not been able to verify this firsthand. Would be grateful if someone with the detailed timings might be able to post them here.

Edit: No difficulties entering the lounge this morning around 7 am, before an AA flight. I asked at reception about entry restrictions, and was told that they have been restricting entry in the afternoons due to unusually high holiday passenger loads, including many students returning to Asia for the holidays. Hopefully, this means the restrictions will not last long. Also, there must be a lot of students with OneWorld status or travelling in premium cabins!