Nickson told TTG her decision to switch was driven by her wish for more freedom when negotiating contracts with suppliers.
She revealed other consortia had previously made approaches to see if they could persuade her to leave Not Just Travel but the timing had not felt right.
Nickson said: “I’ve always taken great pleasure in designing the business around what I think works best for my customers, and continually improving the service I give them.
“Becoming independent has given me the flexibility to continue on this journey, and after careful consideration PTS turned out to be the perfect partner to make this possible.