Farmers want urgent action as Government statistics reveal the number of herds infected by TB has risen five-fold since 1996.
Our environment correspondent Duncan Sleightholme has been to a farm in Somerset that was free of the disease until three years ago:
The Farming Minister David Heath will be at the Royal Bath and West Show, which starts today.
He'll discuss issues like TB and the forthcoming badger cull with farmers. A cull could start as early as Saturday in Somerset and Gloucestershire.
Other concerns for agriculture include the Schmallenberg virus and the future of the industry.
Mr Heath will also visit the Orchards and Cider Pavilion.
Bovine TB and a difficult year for farming will be among the discussions at the Royal Bath and West Show later.
It's one of the biggest agricultural shows in the country. More than 150,000 people are expected to attend the event in Shepton Mallet.
This year is the 150th show and runs until Saturday.
It needed more than 600 eggs for the mix. It had to be baked in an industrial oven. And a forklift was brought in to assemble the all-important parts. But when it came to the crunch, did it all come together?
Watch this video of the military-style operation involved in putting together a Victoria sponge that, it's hoped, will break records.
A baker from Dorset has made what is thought to be the largest Victoria sponge in the world. The five feet wide cake will go on display at the Royal Bath and West Show later this month as part of their 150th anniversary celebrations. We've been following its progress throughout the day.
A baker from Dorset is in the process of making what is thought to be the biggest Victoria sponge in the world.
The 5 foot wide cake will go on display at the Royal Bath and West Show once completed.
Watch Laura Makin-Isherwood's report from the bakery in Somerset:
A bakery in Minehead is hoping to bake the world's biggest sponge cake today.
The five feet wide giant is part of plans by the Royal Bath and West Show to celebrate its 150th anniversary later this month.
It's quite an operation - it needs more than 500 eggs and will have to be assembled in sections.