Heli-air have or had an R44 police G-POLI that they say was in use on 'security' operations in Italy. Certainly the pilot was Italian.
It was at Helitech 2009 all white with marks declaring it was a POLIcopter. Not sure that Heli-Air have ownership there is a London based company called Luxtronic involved along the way.
You may find more from G-INFO.... I have not checked it myself.