I don't think police in the UK have very lenient attitude towards not showing a front plate (somebody please correct me if I'm wrong), and the fines are up to £1000... as much as it galls me to spoil the look of that front end, I can't see myself having the balls to go "naked" . Putting it in the dash just feels dumb (looks awful and still doesn't satisfy Mr Plod)
Sadly, I don't think there is such a thing as a "low profile" plate here (the absolute minimum based on the specs is 101mm - 79mm characters and 11mm margin top and bottom), and your options for colour on the front are white, white, or white (you can't even try to disguise it against the grille with white/silver lettering on a black plate any more). Sigh.
The wide and short license plates you all have over there look MUCH better on the car than the the US version where the proportions are ugly.