Rob Brydon reveals behind-the-scenes blunder nearly ruined new BBC show

Rob Brydon has disclosed the moment his mistake nearly wrecked filming for a fresh BBC competition. The Gavin & Stacey actor, 60, is hosting a brand new reality show,Destination X. It features 13 strangers embarking on a secretive road trip across Europe, combining elements of The Traitors and Race Across The World.

The participants are journeying on a coach with sensory deprivation, unable to see their location or track their distance travelled. Daily, they're challenged with working out their possible whereabouts after receiving a selection of peculiar clues for assistance.

Only the cleverest will manage to distinguish the false leads from the genuine hints, with players gradually eliminated until one winner emerges (claiming a £100,000 prize) as they guess locations, whilst the participant furthest from their actual position gets knocked out.

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"It's the adventure of a lifetime, with one simple question at its heart: where in the world am I? Rob Brydon masterminds the high-stakes competition where nothing is as it seems...," the synopsis reveals, reports Wales Online.

The intense series naturally only functions if contestants can genuinely participate without receiving any hints about the external world during their journey.

Despite numerous production safeguards being implemented to guarantee this, Rob almost sabotaged everything.

Discussing the show before its debut, the presenter confessed that although he was "very careful", he encountered one mishap.

He said: "I won't say where we were, but we we're on a hillside, that's all I'll say, and we were about to visit a lovely location, and I was looking forward to where we were going next.

"I was chatting to some of the crew and I said out loud, 'I can't wait to get to [the place]' and then I realised that just over there was one of the players and I had a sinking feeling in my stomach.

"Luckily they didn't hear, and I can be sure of that because of what happened next which told me that they'd not heard. That was the only one but it was a constant fear."

Rob deliberately avoided revealing any specifics since, in an unusual twist, audiences can participate alongside the contestants, with their whereabouts remaining secret until each episode concludes.

Executive producer Dan Adamson then revealed additional hazards the production team encountered and outside elements that nearly exposed the secret.

He said: "We crossed a lot of borders and there was always a chance that we were going to have officials trying to board the bus, and so we had to have plan Bs, which we had fake uniforms that we would then do a second boarding of the bus to try and pretend it was just part of the room."

Destination X was filmed across 32 days, demanding 190 crew members who required 7,000 hotel rooms spanning 30 hotels, whilst they journeyed 11,000 km throughout Europe. The coach itself contained 7km of wiring, featuring 46 cameras and over 40 support vehicles.

Speaking about the grandeur of the show, Dan elaborated: "We had the chance to turn Europe into a board game, so we immediately thought that the way we bring scale to the challenges is we just get incredible locations and we take over whole castles, we run a train on a public network, we take over cable car systems, the scale just goes up and up and it's like, actually, what fun can we have with those toys? And how do we then lay clues through that? And obviously that was partly about the adventure and partly it's about thinking, how will then that drive the story?

"It's rare you get a chance to turn the whole of Europe into a boardgame," he added. "We love the wanderlust of it, and we loved the play-along, the audience will genuinely play this game."

Destination X premieres on BBC One and iPlayer on Wednesday, July 30.