Karen was promoted to the position of trade partnerships director.
She will lead a trade team of 20 spread across the UK and support agents working with B2B brands such as Gold medal, Pure Luxury, Incredible Journeys and Cruise Plus.
Nick Hughes left Princess Cruises to become the sales director for UK and Europe.
Three days ago, she celebrated her 26th anniversary at Gold Medal, where she worked in the call centre.
She went from agency sales and wholesale manager to head of trade support and was responsible for the Farebank agent incentive scheme.
Applebaum said that Karen's appointment is an example of how we develop talent and give opportunities for career progression.
It is great to have her as part of the leadership team.
Her knowledge of our trade partnership network and familiarity with the needs of our valued agent partners across the UK can only be a positive thing for them.
I have been with this company my entire working life and I am very excited to apply all the experience and knowledge I have gained in that time to this new challenge.
I know our TPMs and industry partners well, and already have some exciting ideas for how we can deepen those relationships further. With peaks just around the corner, I can't wait to start making those ideas a reality.