MON, XL, AEU, MYT, IEA - the list could go on of charter airlines that operated the 757 with 235 seats
Just to correct the above statement, correct me if wrong but I don't think AEU ever operated the B757 with 235 seats config. According to their website, the highest config B757 is currently at 221 seats...and I was under the impression that they used to be less (about 200?).