Can police enter your home without a warrant?

Yes, in certain circumstances. While a search warrant is the standard route, police have several statutory powers to enter premises without a warrant: to arrest someone, to save life or limb, to prevent a breach of the peace, and in hot pursuit of a fleeing suspect. Each power has specific conditions that must be met.

The law

Police and Criminal Evidence Act 1984, Section 17. Warrantless entry to premises for specified purposes: to arrest for indictable offences, to recapture an escaped prisoner, or to save life or limb.
Police and Criminal Evidence Act 1984, Section 8. Power to apply to a magistrate for a search warrant. Requires reasonable grounds to believe an indictable offence has been committed and relevant evidence is on the premises.
Police and Criminal Evidence Act 1984, Section 18. Post-arrest warrantless search of premises owned or controlled by the arrested person, authorised by an inspector or above.
Human Rights Act 1998, Article 8 (ECHR). Right to respect for private and family life and the home. All powers of entry must be proportionate and in accordance with the law.

What to do

Ask the officer to identify themselves and state which statutory power they are relying on before opening the door.
If they have a warrant, request to read it: the warrant specifies what they can search for and where.
Do not physically obstruct officers if they have a lawful power: this is a separate criminal offence.
Cooperate calmly but note the time, officer numbers, and any witness details.
If you believe the entry was unlawful (no warrant and no valid statutory power), seek legal advice immediately: you may have a civil claim or a complaint to the IOPC.

In detail

The right to respect for the home is protected under Article 8 of the European Convention on Human Rights, incorporated into domestic law by the Human Rights Act 1998. Entry to your home by police therefore requires either your consent or a lawful power. Entry without consent and without a power is unlawful and may expose the officers involved to a claim of trespass.

Warrant-based entry

The most common route is a search warrant issued by a magistrate under s.8 of PACE 1984. The police must satisfy a magistrate that there are reasonable grounds to believe that an indictable offence has been committed and that there is evidence on the premises likely to be of substantial value to the investigation. The warrant specifies what may be searched for and must be shown to the occupier before entry.

Warrantless entry: statutory powers

Police may enter and search premises without a warrant in the following circumstances:

s.17 PACE 1984: entry for arrestA constable may enter and search any premises to: Arrest a person in connection with an indictable offence; Arrest a person for specified offences under s.17(1)(c), including certain road traffic and public order offences; Recapture a person unlawfully at large; Save life or limb or prevent serious damage to property.

The officer must have reasonable grounds to believe the person being sought is on the premises.

s.18 PACE 1984: entry after arrestAfter arresting someone away from their home, an inspector or above can authorise a warrantless search of premises the arrested person owned or controlled, if they have reasonable grounds to believe there is evidence relevant to the offence or a connected offence.

Breach of the peacePolice have a common law power to enter private premises to deal with or prevent a breach of the peace. This power has been confirmed in cases including Thomas v Sawkins [1935]. A breach of the peace is not itself a criminal offence but refers to an act causing, or likely to cause, harm to a person, property, or a person's presence in public.

Firearms and drug warrantsSeparate warrant powers exist under s.46 of the Firearms Act 1968 and s.23 of the Misuse of Drugs Act 1971, allowing entry with a warrant to search for prohibited weapons or controlled drugs respectively.

What to do if police attempt entry

If officers arrive at your door, you are entitled to ask: (1) who they are, (2) what power they are relying on, and (3) whether they have a warrant. If they claim to be exercising a warrantless power under s.17, ask them to specify the person they are seeking or the ground (e.g., saving life and limb). If they have a warrant, you are entitled to read it. Physically obstructing officers exercising a lawful power is an offence under s.89 Police Act 1996. If the entry is later found to have been unlawful, you may have a civil claim for trespass and breach of Article 8 rights.