"In Leeds, we've got Leeds Bradford Airport and if there's a plane flying over, they cut the scene and wait for the plane to go.
"This is how precise they are, one of the chaps had different cufflinks on for a scene they did the day before and one of the props guys were going nuts because they weren't the same and fans pick up on this sort of thing."
"Most of the people you see in the background are extras but they occasionally use people in their professional capacity."
After the heartbreaking episode aired, viewers flocked to social media comparing James to England Capitan and Tottenham ace, Harry Kane, which he says even cast members picked up on.
"Moira, Natalie J Robb, she came up to me in between takes and said, 'I'm going to tell you something, you might have had it before but you're the spit of Harry Kane, apart from you're shorter than him but you're better looking than him'.
"They were all, Lisa Riley for example were so welcoming and polite, they were so nice, it was a really good place to work.
Sharing some behind-the-scenes secrets of the set, James added: "The bed and breakfast that Eric Pollard used to own, they used some of the buildings for scenes but most of it is now done at ITV Studios on Kirkstall Road."
11 Emmerdale spoilers for next week .
What's next in the village?Next week on Emmerdale, Cain's problems grow when Matty bombards him with questions.