With millions of tourists visiting London in the summer, how are the Metropolitan Police keeping the streets clean? Alice Bhandhukravi accompanies officers on Operation Trafalgar as they patrol the West End to crackdown on pickpocketing, drug dealing and anti-social behaviour. There is an appeal for help as police search for the thieves who stole one elderly woman's prized possessions, and Rav Wilding asks for the public's help to find wanted criminals. Show less