London Indymedia

Criminal Mass?

IMC London | 23.05.2007 12:16 | Repression | Social Struggles | London

Critical Mass (CM) is a monthly event mainly consisting of cyclists but other forms of human propulsion are welcomed. The first one happened in San Francisco USA on Friday, September 25, 1992 and since then enthusiasts in many towns and cities worldwide have followed suit. Sometimes events calling themselves 'Critical Mass' accompany public demonstrations but purists argue they are not related to the regular monthly ride. It is difficult to describe CM as opinions differ widely but they seem to range from a simple celebration of cycling to an anti-authoritarian blockade of traffic, particularly cars, with many facets in between. Almost from the beginning there has been a mixed reaction from the police, ranging from helpful facilitation to aggressive confrontation.

In the last few years the police have become much more confrontational in the UK and they try to manipulate the rides. London now has large numbers of cycle police attending every Mass, except the one in December which is close to the New Year holiday when they don't turn up at all!. The Metropolitan Police issued a leaflet to participants in September 2005 claiming that the ride is not lawful. Their claim was rejected in the High Court in May 2006 but the police have since appealed and won.

Critical Massers have vowed that the ride will go on. The next London Critical mass is on Friday 25th May, meeting outside the NFT between 6 and 6.30pm and there has been a call-out to make this the biggest ride ever.

Legal Clarification: "Critical Mass is NOT illegal"

From the newswire: Abuse of police powers in Derby | London Critical Mass 30th September 2005 | London Critical Mass under threat | Critical Mass London: Letter from Green Party to Met. Police | London Critical Mass reports | Amazing turnout on "banned" critical mass | Massive Critical Mass Defies SOCPA Exclusion Zone | Southend's first Critical Mass stopped by police | 2nd Southend Critical Mass ends with 3 arrests | Leeds Critical Mass | York Critical Mass | Police charge cyclists at Glasgow Critical Mass | Birmingham's Ride reaches Critical Mass Videos: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |

Other links: Full judgement | Wikipedia | CM London website |

criminal mass
criminal mass

Typically CM has no set route and no organisers, just a common starting place. The Mass follows those at the front who spontaneously decide among themselves which way to go as the ride progresses. Some local authorities and politicians are ill at ease with this unfamiliar way of doing things, they prefer public events to be carefully pre-planned by organisers with police co-operation, while others tend to regard the Mass as just another environmentally friendly cycle ride.

It seems likely that CM in its present form will cease to exist if it is forced into a police mould. It will become just another 'authorised' public demonstration with the usual hordes of police in front, at the side and at the back. In order to undergo such a transformation organisers would need to be selected and routes pre-planned. Given the anarchic nature of CM it is difficult to see how such an arrangement might be arrived at. On the other hand, police could use their discretionary powers to let CM continue more or less as is. For several years now in New York City there has been much opposition to police control of CM, leading to violent confrontations which have yet to be fully resolved, though CM seems to be on the winning side just now but with depleted numbers. See 'Still we Ride' video and 'Times Up' group. Could something similar happen here perhaps?

IMC London


just attending is not a crime - legal update

24.05.2007 13:50


On Monday the Court of Appeal gave their judgment in the Critical Mass case (Commissioner of Police for the Metropolis v. Des Kay).

Cyclists will want to understand the practical implications of the judgment for this Friday’s Critical Mass.

By two to one (and against the decision of two previous judges), the Court of Appeal rejected Des Kay’s argument that the monthly rides are ‘commonly or customarily held’ which would exempt them from the notification requirements of the Public Order Act 1986.

The result (subject to any reconsideration by the House of Lords) is that any organiser of Critical Mass is now required to notify the police at least 6 days before the event providing them with the date, route, and name of organiser.

If an organiser fails to do this, he or she will be liable to prosecution. It would be for the police to prove that a person was an organiser of Critical Mass.

The case was brought because, in September 2005, the Police handed out leaflets at Critical Mass saying:

“These cycle protests are not lawful because no organiser has provided police with the necessary notification. Your participation in this event could render you liable to prosecution.”

Those statements were, and remain, incorrect. The Court of Appeal’s judgment does not mean either that the ride is unlawful or that those merely cycling in the ride are acting unlawfully.

Friends of the Earth Rights & Justice Centre
Lawyers for Des Kay
23 May 2007


still not totally clear?

24.05.2007 15:49

there's a section (somewhere in that lengthy document for May 2007) which first states that participation is not illegal, then goes on to say how, however, if the police find that the procession is presenting a threat of some kind, or an obstruction to not sure what, then it doesn't matter whether you are an organiser or a participant?
it might well be that i misunderstood this?

peoples republic of southwark

From the CM list

24.05.2007 17:02

Hello Folks,

A friend who is a lawyer said this:

""While the Court of Appeal did say that Critical Mass was a procession and
that the organizers were required to give prior notification of the route,

a) participating in (rather than organizing) Critical Mass is
still lawful

(b) the Court thought it unlikely that the police would ever
successfully prosecute any one for being an organizer.

So the police can't ban Critical Mass and it is absolutely fine to join in
with it. You cannot be arrested for doing so.""

Happy Cycling,

(response to peoples republic of southwark - The cops have always had loads of oppressive 'public order' offences that they could draw on - this ruling makes no difference to that whatsoever)


A few more photos

26.05.2007 10:26

copyright.. may be used under creative commons, non commerical, share-alike license



26.05.2007 13:09

The "everyone be the leader" idea is a nice idea, certainly good PR. Unfortunately in Glasgow the cops just pushed their way to the front and insisted that the individuals who happened to be there when they arrived were the leaders. Strangely they then arrested random people in the middle, but if their policy was to get the leaders, they would definitely arrest the front riders. That was last month BTW - this is this month

Glasgow Critical Mass person


Display the following 3 comments

  1. thanks, masser — peoples republic of southwark
  2. so the cops want to target leaders? — cheer leader
  3. i want to ride my bicycle... — wonderbubble


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