B-Cal
As a young engineering apprentice with BCal at the time of the BA takeover (they called it a merger), I can confirm we did have at least one A320 in the fleet. MD-11's were on order, I had actually ben over to Longbeach to see the production line not long before the BA deal was struck.
If BCal had managed to stay afloat by themselves, remember we were in talks with SAS just before as well, chances are they would have gone with the MD11 and 744 but knowing them, would have had their name down as a launch customer for the A380 as well.