Using the location of your business as the basis to pursue you Harry looks like a really dodgy use of police powers. Because they had no intention of going after your company, they were after you personally.
Well funded lawyers could have a field day with all of the different aspects of this but it would be expensive and draining of your time and energy.
But I hope you do make a formal complaint about the non-crime and outside of jurisdiction aspects at least and then escalate it (I'd expect this to be inevitable). In your shoes I'd also be pushing for an apology that you made 30 transphobic tweets.