Well I haven't heard from customer relations yet, but customer relations in the business lounge at T5 told me to use the QR feedback which I did. 10 minutes later a lady from BA called me and invited me to the First Class Lounge in T5 by way of an apology. Very professional, gave me a tour, and doesn't agree with what BA are doing with the £5 voucher and no Free access to Northern Lights Lounge in absence of BA one meantime. She said that wouldn't happen anywhere else and thinks it is poor so we shall see if there are any changes.