Burglary and criminal damage

Burglary and criminal damage are best revised together because both offences sit at the point where the criminal law protects property, security, autonomy and public order. The offences are not simply extensions of theft. Burglary is not theft in a building; it is unauthorised entry into a building, or part of one, accompanied by or followed by specified ulterior wrongdoing. Criminal damage is not merely the destruction of another’s thing; it is the intentional or reckless impairment of property, subject to important questions about ownership, damage, risk, endangerment of life and lawful excuse. In a Cambridge Part IA supervision these offences often appear as problem questions in which the examiner expects close statutory handling rather than broad moral intuition. The first discipline is therefore architectural: identify the statutory route, then apply the elements in sequence. Under section 9 of the Theft Act 1968 there are two forms of burglary. Section 9(1)(a) is the entry-as-trespasser offence with ulterior intent at the time of entry. Section 9(1)(b) is the offence where, having entered as a trespasser, D actually steals or attempts to steal, or inflicts or attempts to inflict grievous bodily harm. The omission of criminal damage from section 9(1)(b), although it appears in section 9(1)(a), is a recurrent examination trap. Aggravated burglary under section 10 adds the presence of a firearm, imitation firearm, weapon of offence or explosive at the relevant time. Criminal damage under section 1 of the Criminal Damage Act 1971 is structured around destruction or damage to property belonging to another, done without lawful excuse, with intention or recklessness. The aggravated form, section 1(2), requires intention or recklessness as to damage to property and intention or recklessness that life would thereby be endangered. Arson is not a separate conceptual offence but the label attached where a section 1 offence is committed by fire. The two topics also consolidate earlier weeks. From Week 2, recklessness is central: after R v G, the test for criminal damage is subjective awareness of risk plus unreasonableness in taking it. From Weeks 8 and 9, the property offences remind us that criminal liability is rarely reducible to economic loss. Trespass, consent, building, damage and lawful excuse all require sensitivity to civil-law concepts, but criminal law often adapts them for its own purposes. The best answers are therefore neither purely statutory nor purely moral. They use the statutory text, the cases, and the principles of culpability and fair labelling to explain why liability is imposed, withheld or aggravated.

Burglary is one of the oldest property offences in English criminal law. At common law it was narrow, formal and strongly connected with the special sanctity of the dwelling at night. The classic offence required breaking and entering the dwelling house of another in the night with intent to commit a felony therein. Each element reflected a social judgment. The requirement of a dwelling house treated the home as a protected sphere; the requirement of night captured fear and vulnerability; breaking distinguished mere trespass from forcible invasion; and the felony requirement connected the entry to grave ulterior wrongdoing. The Theft Act 1968 modernised this structure. It abolished the common-law offence and substituted a broader statutory scheme. Breaking disappeared. Night ceased to matter. Buildings other than dwellings were included, although the dwelling/non-dwelling distinction survives for sentencing. Entry became the pivot. The modern offence therefore protects not only domestic security but also commercial premises, rooms, counters and separable parts of buildings. That expansion explains many of the difficult cases: if any entry suffices, how much of the body must enter? If consent is given for one purpose but exceeded, is the defendant a trespasser? If an area within a shop is reserved for staff, is it part of a building? The modern law answers these questions pragmatically rather than by reproducing the old common-law formula. Criminal damage has a different history. Before the Criminal Damage Act 1971, English law contained a patchwork of malicious damage offences, many of them tied to particular kinds of property. The 1971 Act was a rationalising statute, influenced by the Law Commission’s project of replacing Victorian specificity with general offences. Its structure is deliberately broad. It covers tangible property; it applies to destruction and damage; it criminalises intention and recklessness; and it contains an express lawful excuse provision. It also created a serious aggravated form where damage is connected with endangerment of life, and made arson a mode of commission. The historical movement is thus from narrow enumerated offences to general principles. That movement creates both elegance and difficulty. A broad offence must decide what counts as damage. Is temporary impairment enough? Is cost of cleaning enough? Is alteration without loss of market value enough? It must decide how far subjective beliefs can excuse conduct. It must decide whether political protest causing damage is properly framed as ordinary criminal damage or as civil disobedience demanding constitutional sensitivity. The older law of malicious damage was morally blunt; the modern law is doctrinally more refined but often over-inclusive. The same is true of burglary. The modern offence no longer requires breaking or night, yet retains the moral gravity of intrusion. This can make liability look severe where the trespass is slight, as where D enters a shop open to the public but crosses into a staff-only area. Conversely, the absence of criminal damage from section 9(1)(b) means that a trespasser who enters and later damages property may not commit burglary unless the necessary intent existed at entry, though criminal damage itself may be complete. The historical lesson for Part IA is that these offences are statutory replacements for older common-law anxieties: the home, property, security, risk and malicious interference. Good examination answers show how those anxieties survive in modern doctrinal form.

The first key principle is that burglary is a compound offence. It is not enough to say that D entered unlawfully or behaved dishonestly inside. Under section 9(1)(a), the prosecution must prove entry, a building or part of a building, trespass, and at the moment of entry an intention to commit one of the specified offences: theft, grievous bodily harm, or unlawful damage. Under section 9(1)(b), the prosecution must prove that D entered a building or part of a building as a trespasser and then stole or attempted to steal, or inflicted or attempted to inflict grievous bodily harm. The mental state for trespass is supplied by Collins: D must know, or at least be reckless, as to the fact that he is entering as a trespasser. The second principle is that entry is interpreted broadly but must still be entry into the protected space. Earlier formulations such as effective and substantial entry were softened by Brown and Ryan. In practice, insertion of part of the body may suffice if it is an entry into the building or relevant part. The point is not metaphysical depth but intrusion into a protected area. However, do not collapse entry into proximity. If D merely remains outside and fishes goods through a letterbox with a hook, the issue is whether the instrument or body part enters and whether that counts as entry; it is not burglary merely because the conduct is dishonest. The third principle is that the building requirement is wider than a house but narrower than any enclosed place. Section 9 covers buildings and parts of buildings. Permanent or substantial structures plainly qualify. Vehicles and vessels may qualify if inhabited, but the statutory text must be checked if the problem turns on a caravan, houseboat or temporary structure. The common problem is a part of a building. Walkington demonstrates that a counter area or other segregated internal zone can be treated as part of a building, so a person lawfully in a shop may become a trespasser by entering a staff-only or otherwise restricted area. The fourth principle is that trespass is not confined to entry without any permission. Civil-law trespass turns on exceeding the scope of permission. Jones and Smith is the standard authority: a person with general permission to enter may enter as a trespasser if he knows he is entering in excess of the permission conferred, for example entering his father’s house in order to steal. The same idea applies to shops: a customer has implied permission to enter for ordinary retail purposes, not to enter storerooms, staff zones, or perhaps to enter with a pre-formed intent to steal if the analysis is framed as exceeding implied permission. Care is needed here.

The burglary cases are dominated by the effort to give modern meaning to entry and trespass. Collins is the starting point. The defendant climbed a ladder to a young woman’s bedroom and was invited in after she mistakenly thought he was her boyfriend. The Court of Appeal quashed the conviction because the jury had not been properly directed on entry as a trespasser. The case establishes that trespass in burglary contains a fault element: D must know, or be reckless, as to entering without permission. It also illustrates how consent and mistake are not merely evidential details; they define the boundary between sexual impropriety, trespass and burglary. Brown and Ryan then show the breadth of entry. In Brown the defendant was leaning through a shop window with part of his body inside. In Ryan the defendant became trapped while attempting to enter. The Court of Appeal was unwilling to let the odd mechanics of entry defeat liability. The modern approach is practical: an intrusion into the building may suffice even if the entry is awkward, partial or ineffective for the defendant’s purposes. Jones and Smith is the key authority on exceeding permission. The defendants entered the father’s house, where one had general permission to enter, and stole televisions. The Court of Appeal held that a person may enter as a trespasser where he knows he is entering in excess of the permission granted. The case prevents domestic or social licence from becoming a general immunity. Walkington extends the same logic internally. A shop open to the public contains areas not open to the public. Entry into a restricted area, such as behind a counter, may be entry into part of a building as a trespasser. For criminal damage, the central line of authority concerns the meaning of damage and recklessness. Morphitis v Salmon is the restraint case: a scratch on a scaffold pole that did not impair value or usefulness was not damage. The decision reminds students that the offence is broad but not unlimited. Fiak represents the more expansive approach. A prisoner flooded his cell; a blanket was soaked and the cell was temporarily unusable. The Court of Appeal held that temporary impairment and the need for cleaning could constitute damage. This is doctrinally important because many criminal damage problems involve temporary interference: graffiti, mud, water, glue, paint, or obstruction causing physical cleaning costs. R v G is the leading case on recklessness. Two boys set fire to newspapers under a wheelie bin; the fire spread and caused major damage. The House of Lords overruled Caldwell recklessness for criminal damage and restored a subjective test. A defendant is not reckless merely because an obvious risk would have been appreciated by a reasonable adult; he must himself have been aware of the risk, though taking it must be unreasonable in the circumstances known to him. Jaggard v Dickinson is the leading lawful excuse case. The defendant, drunk, damaged a door believing it belonged to a friend who would have consented. Her belief was mistaken and unreasonable, but honestly held; that was enough under section 5. The case is striking because the law’s concern for honest belief is more generous here than in many areas of criminal law. Together, these authorities show the characteristic method of property offences: statutory words are broad, but case law supplies limiting concepts of entry, trespass, damage, risk and excuse.

See practice questions section below.

See further reading section below.