An extra 5,000 officers have been drafted in to help the operation with about 6,500 officers and staff involved altogether, Devon and Cornwall Police said.
Police have closed off roads and coastal paths to Carbis Bay, the small seaside resort which is hosting the event, erecting steel fences and putting other restrictions in place.
Police are also on patrol in the sea on jet skis and boats.
This Morning host Ben Shephard called a halt to the ITV show as breaking news came into the studio live on air
Meghan Markle and Prince Harry made their first public appearance alongside Prince William and Kate Middleton in 2018, but a Royal author has claimed it was marred by an awkward moment
For the Love of Dogs viewers were left infuriated as they pointed out a 'bad habit' of presenter Alison Hammond's during the latest episode of the ITV show, which has seen ratings plummet.
Callum Laing, 40, was diagnosed with a stage 4 Glioblastoma brain tumour, after he had been suffering from intense headaches - but surgeons in Edinburgh have made a surprising discovery.
Officers said it was 'possibly the biggest seizure in recent years' - and Leonard Simpson was offered £2,000 to get it to Scotland
Many shoppers have been left outraged after spotting M&S charging 'ridiculous amount' for a sandwich
David Jason and Nicholas Lyndhurst will forever be remembered for their roles as Del Boy and Rodney Trotter in Only Fools and Horses, but the pair's relationship off-screen has been far from perfect.
It’s practically impossible.
Footage taken by a Brazilian tourist shows several pedestrians stepping to soothe the black horse which caused damage after running through the London streets on Wednesday.
Carmel Lee described herself as a 'loyal customer' but ended up at her 'wits ends' with the store
Maxine Longmuir, 69, was thrilled when she won a £2,500 holiday to Portugal on the ITV quiz show, but claims she was left devastated when she was told she was unable to rebook it
The former president delivered a scathing response to a critic who just endorsed him.
The couple, who wed in 2002, supported their friend Gabriela Peacock’s book launch at the Broadwick Soho
The pair share a teenage son together
Gordon Ramsay swears by this easy 10-minute pasta dish, which he said has become a "regular midweek family meal" in his house.
The Chase star Mark Labbett, who is also known as The Beast, shared a snap of his 'healthy' dinner while dining out at a restaurant
Larry Webb confessed on his deathbed to shooting and killing Susan Carter and her daughter Natasha ‘Alex’ Carter over financial troubles
A married couple have been charged over an alleged string of “dine and dash” incidents where restaurants were left hundreds of pounds out of pocket.
Meghan penned a letter to King Charles following the claims.
Singer shared mortifying backstage blunder while appearing on ‘The One Show’
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