Fans of The Traitors are livid as their TV favourite 'disappeared' from the BBC's upcoming celebrity line-up. The highly-anticipated list of 19 stars set to participate in the upcoming series of Celebrity Traitors, hosted by Claudia Winkleman, was released on Tuesday. Among the high-profile cast is actors Stephen Fry, Ruth Codd, Celia Imrie, Tameka Empson and Mark Bonnar. Comedians Alan Carr, Nick Mohammed, Joe Wilkinson and Lucy Beaumont will also take part, joining singers Paloma Faith, Cat Burns and Charlotte Church. However, there's one star in particular who some fans were hoping to see in Ardross Castle. Many hoped comedian Bob Mortimer, 65, would be featuring on the show and were left disappointed to find out he wouldn't be. Some took to social media and posted: 'NO BOB MORTIMER.' 'No Bob Mortimer? Gutted.' 'I was promised Bob Mortimer.' 'WHERE IS BOB MORTIMER WHATS THE POINT.' 'No Bob Mortimer???' 'Where is Bob Mortimer? At least I don't need to watch it now he isn't in.' 'I needed Bob Mortimer in this!!' 'No Bob Mortimer. Booooooooooooooo.' As excitement increases for the Celebrity Traitors, BBC bosses took extra precautions to keep the cast under wraps ahead of its reveal, following a series of leaks. According to The Sun, executives put in place a military-style operation to transport the all-star cast to Ardross Castle. Instead of flying into Inverness Airport from their homes across the globe, the celebrities will travel by several means including rail, air, car, and boat. And a no-fly zone is officially in place over host Claudia's Highlands HQ to stop drone photographers from securing any images. A source told the publication: 'For a show with secrecy and shocking plot twists at its heart, navigating the celebrity version has been a real puzzler. 'Casting the likes of TV presenter Kate Garraway, former rugby star Joe Marler, and singer Paloma Faith creates a situation which is a lot more open to leaks and gossip than recruiting a call centre manager from Liverpool or a retired opera singer. 'So execs have worked really hard to lock down every inch of the production.' The source added that instead of a simple travel process, celebrities will arrive via various methods of transport. The source also claimed that a no-fly zone has already been put in place to stop any preparations from being snapped. A spokesperson for the BBC declined to comment.