"Hi Colin
I wanted to send through a big thank you for making things happen!
From the time we initially spoke (when I advised you of my desired change of work place and ideally where I wanted to be when the New Year came about), you got in and made it all come together very quickly and professionally , which has resulted in the best outcome /position I could ask for.
I really appreciate your swift and professional approach in making appointments for me, following up on things directly, day to day until you had accomplished the outcome I was chasing. It was a hassle free, pleasant and friendly experience that I really appreciated.
Thanks again for all your efforts, well done and I wish you a lovely Christmas and a prosperous New Year."
Candidate