The original idea was conceived in 2007, when two friends Matthew Bland and Joseph Tan, developed the story after sharing their love of horror films. They started talking about Dracula's creation in the small fishing town of Whitby, North Yorkshire. A town that is a thirty mile drive from their hometown of Middlesbrough. They were frustrated at the fact, no Dracula film has ever been filmed in Whitby, but in alternative locations. The pair decided to write a story about the return of Dracula to Whitby. By 2008, they completed several drafts of the script. Sadly in 2009, Joseph died of complications from heart surgery and Matt decided to put the production on hold.

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A year later, Matt took a look at the script, he updated it with friends Matt Charnock and Stuart Hanrahan. Both Matt and Stuart filmed a concept trailer for funding. However despite positive press coverage, the project was placed on hold again due to their working schedules. It wasn't until nine years later, the project got a new lease of life after Matt mentioned the film to his producer friend Paul Hodgson. Paul asked to see the script and loved it. Matt and Paul worked together on another of Paul's film 'Give Them Wings' in the autumn of 2019. It was on-set they began talking about Solid Venom and with the persuasion from Paul, Matt decided to give the project a new lease of life and revisited the last draft of the script, updating some aspects of the story. Three years later, a new draft was created, he handed the script over to Paul, who had spent several months editing it until a final draft was agreed.