With shown in their rank. They wouldn’t have

With the rank structure officers can see the commander and his
rank this will boost morale in the officers as they know that they are being
controlled by someone who knows what they are doing. He then uses his
experience and command and control to see where more police are needed, who
needs what equipment and who needs to push up.  Because of the Command and
Control structure, leaders were able to control teams of officers and tackle
rioters in an organised way and with strategy.

Even under extreme pressures such as in the London riots, with the
rank structure and clear command and control the police force could still
maintain a foothold. The leaders who were on the scene used command and control,
they made strategies by using their experience and this is shown in their rank.
They wouldn’t have gotten to that position without displaying excellence in the
field and proving they have good leadership and command.

Without someone high up in the rank structure to
organise/co-ordinate police teams and communicate to the separate teams of
officers where things are working or not, the police would undoubtedly lose
their control over the situation and rioters would spread to other areas
leading to possible deaths of officers and harm to civilians.

From there the operation of riot control would splinter in to
small battles of attrition, where in one street the police would be holding
back rioters, in other streets the rioters may have broken through.

Rioters would recognise that the police force is disorganised and
would exploit this, breaking police lines and furthering the chaos. With no one
to clearly report to the police would not be able to regain their footing and
then overwhelmed, losing control on the situation.

In this situation Command and Control was used to manage units by
making strategies and carefully planning.  These units being police
officers, their equipment and vehicles. the rank structure ensured that
officers knew who to listen to and who they needed to work with. If the rank
structure wasn’t present, contact with certain teams would become disorganised
which leads to poor performance. 

Through the police response in the London riots, command and
control is shown to be very effective.

To create an effective system, the uniformed services employ a
rank structure. This rank structure ensures people know what they are doing and
who they are reporting to. Those higher up in the structure have more
responsibility and more power.

Uniformed Public Services use Command and Control systems in day
to day operations, so they can work effectively.