I had my phone interview yesterday too.
I said No to TR cost. The guy was very professional on the phone and had a nice attitude.
However after we had the phone interview/questions we were chatting and I advised that it would have to be something that offered me more either financially or an improvement of lifestyle for me to move from my present company. It seemed that jet2 were unable to offer me this.
Had the email a few hours later advising I wasn't successful.
MAB
