The organisers of the CLA Game Fair have taken the decision to cancel the event one week before the show was due to open.
Adverse weather, poor ground conditions and saturated fields have been cited.
The event was due to take place from July 20-22 at Belvoir Castle, Leicestershire.
The organisers said: “We were forecast 36 hours of drying conditions, which we have had. We hoped that this would have been enough to dry out the waterlogged ground. Unfortunately, the benefit has been negligible and as such it would prove impossible to allow the 3,000-4,000 vehicle movements still required to complete the remainder of the show build.
“Every effort has been made over the past few weeks to protect the integrity of the ground to enable the event to go ahead. The weather forecast is predicting significant further rainfall in the next 48 hours. The situation looks set to only deteriorate from this point on.
“This knowledge combined with increased health and safety risks during the build and for the public during the three days of the CLA Game Fair has led us to the point where we do not believe we can deliver the show.”