Burglary and criminal damage

Burglary and criminal damage represent two distinct but practically important species of property offence, each governed by its own statutory framework. Burglary, defined in s.9 of the Theft Act 1968, protects the security and privacy of buildings and parts of buildings against trespassory intrusion coupled with specified ulterior intents or acts. Criminal damage, defined in s.1 of the Criminal Damage Act 1971, protects property itself against destruction or damage without lawful excuse. Both offences exhibit composite structures—burglary combines a conduct element (entry as a trespasser) with ulterior fault or actus reus (the s.9(1)(a) and s.9(1)(b) alternatives); criminal damage combines a result element (destruction or damage) with a broadly defined fault element (intention or recklessness) and a statutory defence of lawful excuse.

This note addresses the doctrinal architecture of burglary and criminal damage at FHS depth. It analyses the historical development of burglary from common-law housebreaking to the Theft Act's two-limbed definition, the shifting judicial interpretations of 'entry', 'trespasser', and 'building or part of a building', and the practical significance of the ulterior intent requirements. It then turns to criminal damage, examining the actus reus of destruction or damage, the meaning of 'property' and 'belonging to another', the mens rea of intention or recklessness, and the statutory defences of lawful excuse under s.5(2). Academic debates focus on the coherence of the burglary definition, the scope of conditional intent, and the boundaries of lawful excuse in damage cases. The note concludes with a worked essay on the proper scope of burglary, common exam traps, and practice questions designed to test nuanced application of the statutory ingredients.

The common law of burglary traced its roots to the feudal protection of the dwelling-house. At common law, burglary required breaking and entering a dwelling-house in the night with intent to commit a felony therein. The offence was closely tied to the sanctity of the home and the heightened vulnerability of householders during the hours of darkness. The requirement of 'breaking' entailed the creation of an opening—physical force against a door, window, or wall—though constructive breaking, such as entry by fraud or under false pretences, came to be recognised. The temporal limitation (night-time) reflected the offence's historical rationale: invasion of the home while its occupants slept was regarded as peculiarly threatening.

By the nineteenth century, the common-law definition had become unduly narrow. Statutory interventions expanded the offence to cover daytime breaking and entry, and to protect buildings other than dwelling-houses. The Larceny Act 1916 defined burglary and housebreaking as separate offences, the former retaining some vestige of the night-time element, the latter applying by day. The complexity and formalism of these provisions attracted sustained criticism, particularly from the Criminal Law Revision Committee (CLRC) in its Eighth Report (1966). The CLRC recommended a simplified, unified offence of burglary that would dispense with the anachronistic requirement of 'breaking' and the temporal restriction, and would instead focus on the trespassory character of the entry combined with specified criminal purposes or acts.

The Theft Act 1968, implementing the CLRC's recommendations, enacted the modern offence of burglary in s.9. The new definition retained the core rationale—protection of buildings against trespassory intrusion coupled with criminal intent or conduct—but shed the archaic baggage of breaking and night-time. Section 9 created two forms of burglary: s.9(1)(a), committed when a person enters a building or part of a building as a trespasser with intent to steal, inflict grievous bodily harm, rape, or do unlawful damage; and s.9(1)(b), committed when, having entered as a trespasser, he steals or attempts to steal, or inflicts or attempts to inflict grievous bodily harm. The bifurcated structure reflects a legislative judgment that both the trespassory entry with ulterior intent and the consummation of theft or violence within the building merit separate criminalisation. The Criminal Damage Act 1971, enacted shortly afterwards, consolidated and reformed the law relating to damage to property, replacing the Malicious Damage Act 1861 and related statutes with a streamlined code. The 1971 Act adopted the Caldwell definition of recklessness (later overruled in G [2003]), introduced the lawful excuse defences in s.5, and created aggravated offences for damage with intent to endanger life and for arson.

The two limbs of burglary

Burglary is defined disjunctively. Section 9(1)(a) criminalises entry as a trespasser with one of four specified intents: to steal, inflict grievous bodily harm, rape (now replaced by offences under the Sexual Offences Act 2003, though s.9(1)(a) continues to refer to rape), or do unlawful damage to the building or anything therein. Section 9(1)(b) criminalises the stealing or attempted stealing, or the infliction or attempted infliction of grievous bodily harm, by a person who has already entered as a trespasser. The distinction matters: for s.9(1)(a) the ulterior intent must exist at the moment of entry, whereas for s.9(1)(b) the relevant act or attempt must occur after entry. Crucially, s.9(1)(a) is an inchoate offence in substance—it punishes trespassory entry coupled with intent, irrespective of whether the intended crime is committed—while s.9(1)(b) requires proof that theft or violence actually occurred or was attempted.

Entry as a trespasser

Both limbs require that the defendant 'enters … as a trespasser'. 'Entry' is not exhaustively defined by statute. At common law, the insertion of any part of the body, however slight, sufficed. Early Theft Act authority suggested a similar approach: in Collins [1973] QB 100, Edmund Davies LJ stated that there must be 'an effective and substantial entry', though the facts (a man partially through a bedroom window, invited in by the occupant) left the precise threshold unclear. Later authority narrowed the requirement. In Brown [1985] Crim LR 611, the Court of Appeal held that the insertion of the top half of the defendant's body through a shop window constituted entry, even though his feet remained on the pavement outside. In Ryan [1996] Crim LR 320, the defendant became trapped in a window with only his head and right arm inside; the Court of Appeal held that this was sufficient entry, effectively abandoning any requirement that the entry be 'substantial'. The modern position is that any entry of the body, or arguably of an instrument used as an extension of the body, suffices, provided it is not de minimis.

Trespass requires absence of permission or authority to enter. A person enters as a trespasser if he knows or is subjectively reckless as to the fact that he is entering without permission: Collins, affirmed in Jones and Smith [1976] 1 WLR 672. The latter case established that a person may be a trespasser even if invited to enter for some purposes, if he enters with an intention that exceeds the scope of the permission. In Jones and Smith, the defendant entered his father's house (where he had general permission to enter) intending to steal a television set; the Court of Appeal held that his intention took him outside the permission and rendered him a trespasser. Similarly, in Laing [1995] Crim LR 395, the defendant, employed by a department store, entered parts of the store to which his access was restricted, intending to steal; his entry was held to be trespassory. The principle is that permission is construed in light of the purposes for which it is given, and an entry for an undisclosed and forbidden purpose is trespassory.

Building or part of a building

Section 9(1) applies only to entry into 'a building or part of a building'. 'Building' includes 'an inhabited vehicle or vessel', whether the person having a habitation in it is there or not (s.9(3)). Beyond that, the statute offers no definition. The courts have adopted a functional, common-sense approach. In Stevens v Gourley (1859) 7 CBNS 99, a structure was held to be a building if it had some degree of permanence and was of substantial construction. In B and S v Leathley [1979] Crim LR 314, a walk-in freezer container on site for two years, connected to electricity and resting on sleepers, was held to be a building. In Norfolk Constabulary v Seekings and Gould [1986] Crim LR 167, by contrast, a lorry trailer used for temporary storage was held not to be a building, despite having been in place for over a year; the decisive factor was its design for mobility and the lack of attachment to the land. The distinction can be fine and turns on degree.

The judicial interpretation of burglary and criminal damage has been shaped by a series of landmark decisions. Collins [1973] QB 100 remains the leading authority on the requirement that the defendant enter 'as a trespasser' with knowledge or recklessness as to the absence of permission. Though its suggestion that entry must be 'effective and substantial' has been eroded, the case established the subjective fault requirement for trespass. Jones and Smith [1976] 1 WLR 672 extended the concept of trespass to cases where the defendant enters premises to which he has general permission, but does so with an undisclosed intent that exceeds the scope of that permission. This principle has important practical consequences, particularly for employees or licensees who abuse their access.

Walkington [1979] 1 WLR 1169 clarified the meaning of 'part of a building', holding that functionally distinct areas within a building—such as a counter area marked off for staff—can constitute separate 'parts' for the purposes of s.9, even if not physically enclosed. Attorney-General's References (Nos 1 and 2 of 1979) [1980] QB 180 established that conditional intent—intending to steal if goods worth stealing are found—suffices for s.9(1)(a) burglary. The ruling is doctrinally controversial but has been consistently applied. Ryan [1996] Crim LR 320 pushed the entry requirement to its limit, holding that a defendant trapped in a window with only head and arm inside the building had nonetheless 'entered' for the purposes of s.9.

In the realm of criminal damage, R v G [2003] UKHL 50 represents a watershed. The House of Lords overruled Caldwell and restored subjective recklessness as the fault element for criminal damage, emphasising that a defendant should not be convicted unless he was actually aware of the risk of damage. Jaggard v Dickinson [1981] QB 527 established that an honestly held belief, even if induced by intoxication, can found a lawful excuse under s.5(2)(a). Blake v DPP [1993] Crim LR 586 (Divisional Court) circumscribed the s.5(2)(b) defence, requiring that the property protected be in immediate need of protection and that the defendant's act be objectively capable of protecting it. These cases collectively define the doctrinal boundaries of the two offences.

See practice questions below.

See further reading below.