Dispersal orders have been put in place for the South Kilburn Estate and Hayes Town.
The orders are aimed at combating anti-social behaviour, and allow Police and Community Support Officers to move on groups, with arrest, fines and imprisonment as potential punishment for non-compliance.
The South Kilburn order is the second this year, the first one ran out in early summer. This one runs to mid-November. The Hayes order is the third currently being enforced in the south of Hillingdon.
One which covers the stretch of the Uxbridge Road, between the Ossie Garvin Roundabout and Lansbury Drive, was put in place in July. It is due to expire in December. Another in Yeading, between Maple Road and Willow Tree Lane, began in May and will run until November.