I think we would use travel agents in the UK - this seems to be an equivalent register
"A list of all registered travel agents and tour operators":
https://www.gov.uk/government/publications/a-list-of-all-reg... "A tour operator sells the product that they themselves create. They do not sell anybody else's packages, they sell only their own creations. A Travel Agent offers the consumer a range of holiday packages that have been put together by a tour operator"
So assuming your register covers both, then I would put both in the description if for the UK market