- Thorpe Park is talking to agencies about the future of its £1.4 million account.
The move coincides with this week's sale of the Tussauds Group --of which the Surrey theme park is part -- by the Pearson media conglomerate to the venture capitalists Charterhouse for £325 million.
Davies Little Cowley Fiddes, which had held the business since it left Bates Dorland five years ago, has declined to repitch for it.
Hywel Davies, the agency's joint chief executive said: "In these circumstances, the incumbent agency doesn't have a chance and we felt we'd just be wasting our time."
He added: "A repitch generally means that something has gone wrong with an account and it's estimated that only five per cent of agencies successfully repitch for business."
The ownership change has also resulted in the departure of Alan Randall, Thorpe Park's high-profile head of marketing, who appointed Davies Little.
Thorpe Park has regularly used TV to fight off competition from its nearby rivals, Legoland the Chessington World of Adventures.
In 1996 it spent more than £1 million advertising its newest spectacular ride -- called No Way Out -- and last year became the first leisure company to sponsor a programme on London Weekend Television in a shake-up of its promotional activity.