The movie marks the feature film debut of director Ryan Andrews, who has previously worked on shorts.
Luckily for Andrews he's worked with both Winstones before and was able to convince them to be a part of his first movie.
“Almost everyone I've worked with is in ‘Elfie,' so it's just a natural progression. It was great. I was like, ‘I've got this butcher Bryn, he'd be perfect for Ray but I never thought I'd get to work with Ray, but now I've worked with him and we get on really well, what about if I ask Ray to play?' So I asked Ray if he'd play, I spoke to Jaime and I said ‘do you mind?' And she was like, ‘no way, on our film hiring my dad - amazing, that would be perfect,'” he explained.
Jaime was very excited to share the screen with her dad.
“I think he was really honored that we came to him, and I was also honored that he really loved the script and wanted to be involved,” she said.
“It felt very normal and it's what we both do now and he really respects me in my own right, as I do him, but also manage to be in awe of him when he's working. Yeah, it was great. It was super special actually,” added the actress.
“Elfie Hopkins” was written with Jaime in mind and the 26-year-old even had a hand in creating the character of Elfie - a wannabe Miss Marple.
“For me Elfie was always an alter-ego of mine when me and Ryan started creating her. There are not enough female kick ass detectives out there anyway, who are actually normal people,” she said.
“I just wanted to play someone who was stuck in between this weird age of being an adult and a teenager and frustrated because she's not taken seriously. So then she turns to being stoned and actually she's faced with the reality of becoming a really good detective because some dark stuff goes on, some very dark stuff.”
“Elfie Hopkins” is about a bored young girl who has aspirations to become a detective. Unfortunately for her she lives in a quiet little village where nothing ever happens.
However, that all changes when a mysterious family move in next door and people from the local area start disappearing.
The movie is very violent, with lots of blood and gore.
According to Winstone's co-star Aneurin Barnard, who plays Elfie's best pal Dylan, gore is what every good horror film needs.
“When you're making films you want to make an effect, you know, and if you just do a little bit it's kind of like, ‘oh they didn't really embrace that,'” he explains.
“For me it's all guns blazing - everything, or nothing at all,” he added.
“Elfie Hopkins” hits U.K. cinemas from Friday 20th April.