Primary Planning of the Trailer

Dubai - Burj Khalifa. The Palm. Desert.
London - Shard. Westminster. Parliament. MI6. South Bank. China Town. Lake District - Lancashire. Portsmouth.
Brighton/Dover/France - Brighton Pier. White Cliffs of Dover. Eiffel Tower. Cafe Rouge. Isle of White.


Story
Crime Syndicate - Main.
National
Illegal deals between towns - bitcoin - spreadsheet - bank account number the same on most - track to Dubai/France

Bodyguards push through crowd with PM, sniper (zoomed in camera) following him, high angle shot - hairpin scope - gunshot.

or

PM in crowd, guy pulls out gun in crowd, don't show gun, cuts to black, gunshot.

Carries on with news articles about the PM being killed by gunshot.

Start of the film
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Narration - basic understanding of the storyline -set the story, maybe man protagonist, someone well known we know.