"They were fantastic, especially at the time, both inside and out."
Ahhh - the Concorde Lounge - carefully hidden in a pillar that looked like a door to some electrical cabinet - but inside...............
On the other hand it was possible to follow everyone else on arrival and occasionally finish up at the taxi rank without passing Customs, Immigration and without your luggage. I managed it twice and still don't know how. And the issue was clearly not uncommon as on explaining it to an AIr France desk inside I was immediately let in through a door back to airside.............