I worked for AirOps - AirOps were the previous AoC holder to operate for GoldCrest / Carlson Group etc. From memory they had 7 L1011's and two A300's. Based predominantly at LGW and MAN, but subbed for anyone and everyone, both charter and scheduled.
Sadly AirOps had their financed pulled and AirAtlanta took over the mantle, in their colours until the Peach Brand was born. I left as this was happening.
Have to say those days of AirOps were the finest fun I have enjoyed in the airline world. Exciting times and some unusual contracts and destinations all on the venerable L1011 - with great people all around.