You will be seeing the movie exactly as the director intended. If there is any flicker, it's on the 24fps source too.
If you're used to high frame-rate video from games or broadcast TV, then 24fps WILL flicker a little by comparison...you can even see it at the cinema with an experienced eye.
Judder and flicker are entirely different though. A 'normal' UK TV will run at 25fps, the HD movie will be sourced at 24fps. There's a missing frame when showing the 24fps on a 25fps TV and this can cause the judder effect people describe that should not be apparent if you get a 24fps compatible TV.