Senior officers have voiced their concerns the events are dangerous.
The aim to put an end to the unlicensed events comes just days after Jason Nyarko, 26, was stabbed to death at an event in South Bermondsey, south-east London.
He was later pronounced dead at the scene.
Also across the country, Sussex Police saw crowds of up to 2,000 people gathering at a rave in the South Downs in Steyning, West Sussex.
A total of 90 people were arrested, 79 for drink or drug-driving or failing to provide a specimen for analysis and the remaining 11 for public order offences.
Sussex police have warned would-be revellers they would face “the full force of the law” in the wake of the rave attended by thousands on Sunday.
Met Police Commander Ade Adelekan also said police would have “a preventative response around unlicensed music events.”
He added: “We will be looking to make sure that we thwart those where they are likely to take place, because they have morphed away from being just anti-social and in fact they present a real safeguarding issue and a real threat around disorder.”
Last year there was a surge in violent crime in the capital as lockdown was lifted, fuelled by a gang feuds which had been played out on social media.
The Met’s public order command is also preparing for the potential lifting of Covid-19 restrictions on July 19, as well as the August Bank Holiday weekend.
Chief Superintendent Howard Hodges said: “Our significant response to this unlicensed music event demonstrates that this sort of behaviour will absolutely not be tolerated, and anyone planning to attend – or organise – any future events of this nature in Sussex can expect to face the full force of the law.”
Deputy Assistant Commissioner Jane Connors said the squad monitors national and international events to see what may spark protests.
She added: “Every single phase through the lockdown and lifting we have projected forward what might happen and made sure we’re ready for that.
“Be that violence, which is our priority, or any of the public order issues. We are always scanning for that, key dates in the diary, to make sure that we are ready.”