Extra measures have been put in place to prevent a repeat of the illegal rave in Hounslow.
A second attempt was made to enter the disused Morrisons site in Hounslow West by a group of people on Tuesday (January 10).
The premises is now fully alarmed with 24/7 security on site and police patrols have been stepped up in the area.
On Saturday (January 7), squatters who had accessed the premises days before had arranged through social media a party which saw more than 1,500 youths attend.
Hundreds of police along with Hounslow council's noise team and other emergency service teams were called to the location and the event was shut down by officers in riot gear.
Police have met with WM Morrisons Supermarket Plc and the landlord, both who said they are fully committed to prevent any further such incidents.
Chief inspector Wayne Matthews, from Hounslow police who is part of the public order command team, said: “The policing response to the unlicensed music event last Saturday was absolutely text book, in line with policy and would be repeated should future incidents take place anywhere on the borough.
"Hounslow Police understand that such events cause great distress to the local community and also present risk to those individuals who attend.
"Hounslow Police will always deal with any such incident robustly and anyone who is thinking of holding a similar event within the borough can expect to be stopped, have all of their equipment and proceeds confiscated and face prosecution.”
The council's noise officers, who have powers to serve an abatement notice, assisted police on the night and helped to get the organisers to leave the building, resolving the problem on the night.
Councillor Sue Sampson, cabinet member for community protection at Hounslow Council, said: “With both ourselves and the police working in partnership, the situation was resolved.
"But we would warn anyone looking to plan the same or similar event that they will face action and ultimately face prosecution.
"We act to ensure the safety of our residents and visitors in our borough.”
Anyone with information regarding such events or any other matter should dial 999 in an emergency, 101 for non-emergency situations or contact Crimestoppers anonymously on 0800 555 111.
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