Use of force
It’s a rare but frightening prospect to be confronted by an
intruder in your home.
Your first reaction may be to defend yourself but it’s important
to know where your actions stand in law.
The Crown Prosecution Service (
CPS
) and Association of Chief
Police Officers (
ACPO
) have
issued a joint public statement entitled Householders and the Use
of Force Against Intruders.
What's the purpose of the
statement?
The Crown Prosecution Service and Chief Constables are
responding to public concern over the support offered by the law
and confusion about householders defending themselves.

We want a
criminal justice system that reaches fair decisions, has the
confidence of law-abiding citizens and encourages them actively to
support the police and prosecutors in the fight against crime.
CPS and ACPO joint statement
We want a criminal justice system that reaches fair decisions,
has the confidence of law-abiding citizens and encourages them
actively to support the police and prosecutors in the fight against
crime.
Wherever possible you should call the police.
The following summarises the position when you are faced with an
intruder in your home and provides a brief overview of how the
police and CPS will deal with any such events.
What is
‘reasonable force’?
Anyone can use reasonable force to protect themselves or others,
or to carry out an arrest or to prevent crime.
You are not expected to make fine judgements over the level of
force you use in the heat of the moment. So long as you only do
what you honestly and instinctively believe is necessary in the
heat of the moment, that would be the strongest evidence of you
acting lawfully and in self defence. This is still the case if you
use something to hand as a weapon.
As a general rule, the more extreme the circumstances and the
fear felt, the more force you can lawfully use in self-defence.
Do I have to wait to be attacked?
No, not if you are in your own home and in fear for yourself or
others. In those circumstances the law does not require you to wait
to be attacked before using defensive force yourself.
What if the intruder dies?
If you have acted in reasonable self-defence, as described
above, and the intruder dies you will still have acted
lawfully.
Indeed, there are several such cases where the householder has not
been prosecuted. However, if, for example,having knocked someone
unconscious, you then decided to further hurt or kill them to
punish them or you knew of an intended intruder and set a trap to
hurt or to kill them rather than involve the police you would be
acting with very excessive and gratuitous force and could be
prosecuted.
What if I
chase them as they run off?
This situation is different as you are no longer acting in
self-defence and so the same degree of force may not be
reasonable.
However, you are still allowed to use reasonable force to recover
your property and make a citizen’s arrest. You should consider your
own safety and, for example, whether the police have been called. A
rugby tackle or a single blow would probably be reasonable.
Acting out of malice and revenge with the intent of inflicting
punishment through injury or death would not.
Will you believe the intruder rather
than me?
The police weigh all the facts when investigating an incident.
This includes the fact that the intruder caused the situation to
arise in the first place.
We hope that everyone understands that the police have a duty to
investigate incidents involving a death or injury. Things are not
always as they seem. On occasions people pretend a burglary has
taken place to cover up other crimes such as a fight between drug
dealers.
How would
the police and CPS handle the investigation and treat
me?
In considering these cases Chief Constables and the Director of
Public Prosecutions (Head of the CPS) are determined that they must
be investigated and reviewed as swiftly and as sympathetically as
possible.
In some cases, for instance where the facts are very clear, or
where less serious injuries are involved, the investigation will be
concluded very quickly, without any need for arrest.

It is a fact
that very few householders have ever been prosecuted for actions
resulting from the use of force against intruders.
CPS and ACPO joint statement
In more complicated cases, such as where a death or serious
injury occurs, more detailed enquiries will be necessary. The
police may need to conduct a forensic examination and/or obtain
your account of events.
To ensure such cases are dealt with as swiftly and
sympathetically as possible, the police and CPS will take special
measures namely:
An experienced investigator will oversee the case; and if it
goes as far as CPS considering the evidence, the case will be
prioritised to ensure a senior lawyer makes a quick decision.
It is a fact that very few householders have ever been prosecuted
for actions resulting from the use of force against intruders.
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