P256 ORACLE 256 Wjd29 Apr CEN 2129:51    Review by Rory Bond AS IF there's not enough crime and violence on our screens, Crime Limited (BBC1) comes along with an in-depth look at Britain's biggest growth industry. Nick Ross and Sue Cook gave us informers, self-defence, FBI training and profiles of murderers. Some of it was old news, some informative. But the rather cheerful films only sjrvj to justify fears that there's a worrying amount of crime about - a lot of it pretty nasty stuff. TV Plus Guide 250 Local Adverts 270 DIAL A FLIGHT - SEE PAGE 361 Highlight ITV Films Adverts TV Guide