Wow! Thanks so much for the response! I'm Andy Field, one of the voice actors from the game, and can tell you we'd ALL love to make a trip across the pond to the UK! We have worked closely with one of Britain's hottest YouTubers, Dawko, and would love to do something with him at a convention!
Sister Location is indeed amazingly popular, and the fan response has been overwhelming. There's merchandise for the game in all the major retail chains, and in lots of specialty stores as well. It's unheard of for a video game to have such, and even less so for an independent game!
A couple of things the OP forgot: The second FNAF novel will release this summer, and it's been confirmed that a movie is in the works for 2018! And much to the dismay of school teachers everywhere, the catch phrase "Exotic Butters" from the game has become a meme, with hundreds of "Exotic Butters" remixes all over YouTube!
Probably the most promising aspect for the growth of the franchise is that Sister Location was such a deviation from the format of the first four games that it was clear Scott Cawthon has an imagination that will continue to provide fresh, exciting, thrilling games for a long, long time!
In addition to the actors already mentioned, we're in touch with several others, including the voice of the BIdyBabs, Zehra Jane Naqvi (@zehrajane), who lives in London; the voice of Vlad, Chris Mccullough (@griglager); and the voice of Clara, Amber Lee Connors (@AmberLeeConnors), who also voiced Toy Chica, Nightmare Chica, and JJ in FNAF world!
Anything FNAF-related is hot stuff right now and draws huge crowds. It's an honor to be part of something that puts a smile on so many faces (after it puts a scream in their throats!) and we'd love to help bring those smiles to the UK!
I'm easy to find online - please email me and we will get the ball rolling!
Best,
Andy Field