The annual event, formally known as the Royal County of Berkshire Show, was cancelled in 2020 before its return in 2023.
In 2019, nearly 55,000 people had attended the show.
Mr Ackrill said this year will see more livestock at the show and a “brilliant” new addition of lawnmower racing.
He said: “We are still working on bringing the attendance numbers up to pre-Covid levels.
“It’s still growing and we are hoping it will grow more.”
Head of cattle Julian Plank, said there would be 126 cows and calves on show at the event.
“The public can see some nice big animals and some young ones which is great.
“All ages can have a look at what the animals look like, at all their stages.”