SOCPA Sounds

There is a zone around Parliament, including Downing Street, where certain restrictions apply, covered by the Serious Organised Crime and Police Act (SOCPA).

In recent years the police have stopped Critical Mass riders from playing their sound systems within the SOCPA zone, under threat of prosecution, while continuing to allow drivers to play their sounds unimpeded. During these warnings the riders with the sound systems were sometimes videoed by the police.

Here is a collection of evidence about this ban on bicycle sound systems.

Five videos where police are shown shutting down sound systems.

Bus playing loud music.

Voice interview with police.


Photographs of police cautioning a cyclist with a sound system while videoing him.


Video of van playing loud music in Parliament Square while being ignored by cycle police.


Video of police in an attempt at clarification of the law.