The Great British Bake Off bosses have reportedly been forced to add extra security to their contestants' COVID-safe bubble after fans kept trying to get onto the set. Channel 4 producers have doubled security in an attempt to keep the famous tent - currently in the grounds of the Down Hall Hotel in Hertfordshire - free of fans who might jeopardise the coronavirus-free zone. An inside source revealed to The Sun on Monday: 'The last thing the producers want is anything that could risk filming being held up or cancelled completely.' At risk: Great British Bake Off bosses have been forced to add extra security to their contestant's COVID-safe bubble after fans kept trying to get in