Glad you enjoyed reading the blog. Those were the days when airline fuel was much cheaper than today and when the newly -privatised BA could do no wrong.
There is an historical picture on the day when Super Shuttle was launched which shows no fewer than three BA Concordes at Glasgow airport.
Yes, you are correct. I don’t have the information to hand but I do remember a Concorde charter which covered both Paris (don’t know about London) and New York on the same New Year’s Eve.