Background and Facts
The defendant, Walkington, entered a department store during normal trading hours. As a member of the public visiting the store, he was lawfully present on the premises as a customer. His entry through the public entrance of the store was entirely authorised and did not, at that stage, raise any question of trespass. The store was open to the public in the ordinary commercial sense, and Walkington was prima facie in the same position as any other shopper.
Once inside the store, Walkington moved behind a till counter โ an area that was demarcated and plainly reserved for the use of store employees rather than members of the public. No customer of the store held any permission, whether express or implied, to enter that portion of the retail floor. The physical arrangement of the counter itself served as a clear delineation between the customer-accessible sales floor and the restricted operational area behind it.
Walkington's purpose in entering the area behind the counter was to steal from the till. He had therefore formed the intent to steal before or at the moment of entry into the restricted zone. The till was either empty or contained insufficient money for Walkington's purposes, and the full theft was not completed, but the prosecution proceeded on the basis that the actus reus and mens rea of burglary under section 9(1)(a) of the Theft Act 1968 were nonetheless present.
Walkington was convicted at first instance of burglary. He appealed against that conviction to the Court of Appeal, challenging specifically the finding that he had been a trespasser when he entered the area behind the counter, given that he had been lawfully present in the store as a whole at the material time.
The appeal therefore raised, in a direct and practically significant form, the question of how the concept of trespass operates within premises where the defendant holds only a qualified or limited licence to be present. The case engaged the intersection of the general law of trespass with the specific statutory requirements of burglary as defined by the Theft Act 1968.
Issues for Determination
The primary issue before the Court of Appeal was whether a person who enters premises with the general permission of the occupier โ such as a customer entering a retail store โ can nonetheless be a trespasser for the purposes of section 9 of the Theft Act 1968 if they enter a specific, defined part of those premises without permission and with intent to steal. The question required the court to examine whether the concept of "entry as a trespasser" in the 1968 Act is capable of applying to a subdivided portion of a larger building.
A secondary, related issue was whether the defendant's intention at the time of entry into the restricted area is a necessary element of the offence, or whether a trespassory entry followed by a subsequently formed intent would suffice. This engaged the temporal relationship between the act of entry and the mental element required by section 9(1)(a).
Underlying both issues was the broader question of how the courts should interpret the ambit of a licence to enter premises โ specifically, whether such a licence can be geographically limited so as to confine the licensee to particular areas of a building, and what the legal consequences are of exceeding those geographical boundaries.
The Court's Reasoning
The Court of Appeal began its analysis by examining the statutory language of section 9(1)(a) of the Theft Act 1968, which provides that a person is guilty of burglary if he enters any building or part of a building as a trespasser with intent to commit one of the specified offences, including theft. The court paid particular attention to the phrase "part of a building," which Parliament had deliberately included in the provision. That phrase, on its natural reading, contemplates precisely the situation in which a person may be lawfully present in one part of a building but a trespasser in another distinct part of the same building.
The court affirmed the foundational principle, drawn from the civil law of trespass, that a licence to enter land or a building can be limited in its scope โ whether by reference to the purpose for which entry is permitted, the time during which entry is authorised, or the physical areas within which the licensee is permitted to be. A person who strays beyond the boundaries of their licence, whether temporal, purposive or geographical, acts without licence and thereby becomes a trespasser. This principle is well established in the general law and the court saw no reason to depart from it in the criminal context.
Applying this principle, the court held that Walkington's licence as a customer extended only to the areas of the department store that were open to members of the public. The space behind the till counter was clearly and visibly demarcated as an area not open to customers. The physical arrangement of the counter constituted, in the court's view, a sufficiently clear delineation such that any reasonable person would have understood that the area behind it was off-limits to members of the public. Walkington could not have been under any genuine misapprehension about whether he was authorised to be there.
The court drew support from the earlier Court of Appeal decision in R v Collins [1973] QB 100. In that case, Edmund Davies LJ had articulated the requirement that, for the purposes of burglary, the defendant must enter as a trespasser โ that is, knowingly or recklessly as to the fact that he is a trespasser. The court in Collins had confirmed that the concept of trespass in the 1968 Act imports a fault element: a purely inadvertent straying onto another's land without any awareness of trespassory status would not suffice. The court in Walkington applied this requirement and found it satisfied: Walkington must have known, or at the very least was reckless as to whether, he was not permitted to be behind the counter.
The court also applied the reasoning in R v Jones and Smith [1976] 1 WLR 672, which had extended the trespass analysis in a different but complementary direction. In that case, the Court of Appeal had held that a person who enters premises with permission that is subject to a condition, but who enters with intent to act in breach of that condition, enters as a trespasser. The reasoning proceeded on the basis that permission to enter is always implicitly conditional upon the entrant not intending to commit an offence on the premises, and an entry made with the intent to steal therefore exceeds the scope of any permission granted. The court in Walkington found this approach consistent with, and reinforcing of, its own analysis of geographical limitation on licences.
A potentially significant objection to the conviction was that Walkington had entered the store lawfully, and it might be argued that his trespassory status could only be assessed by reference to the building as a whole rather than to a sub-division of it. The court rejected this argument on the clear basis that section 9(1)(a) expressly refers to "part of a building." Parliament had therefore legislated in terms that specifically accommodate the situation where a person is a trespasser in one part of a building but not another. The "part of a building" formulation was not merely a drafting convenience; it was a deliberate extension of burglary liability to cover this precise factual scenario.
The court considered what would constitute a sufficiently defined "part" of a building for these purposes. It did not lay down a rigid test but indicated that there must be some physical or structural delineation that is reasonably apparent to a person in the defendant's position. The area behind a till counter in a department store plainly satisfies this requirement: it is a distinct functional zone, separated from the customer area by the counter itself, and universally understood to be for staff use only. The court would not, by implication, extend the "part of a building" analysis to trivial or imperceptible internal boundaries, but the facts of the present case fell well within the principle.
On the temporal question โ whether the intent must be present at the moment of entry into the restricted area โ the court affirmed that, for an offence under section 9(1)(a), the intent to commit the specified offence must coincide with the act of entry. Section 9(1)(a) is committed upon entry with the requisite intent; it is not sufficient under that subsection for a person to enter a part of a building as a trespasser and only thereafter to form the intent to steal. In the present case, the evidence clearly established that Walkington had formed the intent to steal from the till before or at the very moment he stepped behind the counter, and the temporal requirement was therefore satisfied on the facts.
The court noted, by way of obiter observation, that the position under section 9(1)(b) of the 1968 Act โ which catches a person who, having entered as a trespasser, steals or attempts to steal โ does not require the intent to have been formed at the moment of entry. That alternative route to liability operates differently: it is the act of stealing or attempted stealing following a trespassory entry that constitutes the offence, rather than the entry accompanied by intent. This distinction between the two subsections is important for a complete understanding of the statutory scheme, even though it was not directly engaged on the facts of Walkington.
The court dismissed any suggestion that the absence of a completed theft undermined the burglary conviction. Under section 9(1)(a), the offence is complete upon entry with intent, irrespective of whether the intended theft is subsequently carried out. The fact that the till was empty, or contained insufficient funds, did not affect the legal position: Walkington had entered the restricted area with the intent to steal, and that was sufficient for the offence.
Holding
The Court of Appeal dismissed Walkington's appeal and upheld his conviction for burglary. The court held that Walkington had entered a "part of a building" โ specifically, the area behind the till counter โ as a trespasser within the meaning of section 9(1)(a) of the Theft Act 1968. His general licence to be present in the department store as a customer did not extend to that restricted area, and by entering it he exceeded the scope of any permission he had been granted and thereby became a trespasser.
The court further confirmed that Walkington's awareness of, or recklessness as to, his trespassory status was established on the facts, consistently with the fault requirement identified in R v Collins [1973] QB 100. His intent to steal from the till was formed at the time of entry into the restricted area, satisfying the mental element required by section 9(1)(a). All elements of the offence were therefore made out.
Significance and Subsequent Application
R v Walkington is a foundational authority on the meaning of "trespasser" in the law of burglary and on the operation of the phrase "part of a building" in section 9 of the Theft Act 1968. The decision establishes, with clarity, that permission to enter premises may be geographically limited and that a person who strays into a part of a building beyond the scope of their licence becomes a trespasser in that area even if they remain lawfully present in other parts of the same building. This principle is essential to understanding the full reach of burglary liability under the 1968 Act and routinely features in undergraduate criminal law syllabuses as the leading case on internal trespass.
The case forms part of a coherent trilogy of Court of Appeal decisions โ alongside R v Collins [1973] QB 100 and R v Jones and Smith [1976] 1 WLR 672 โ that together define the parameters of trespass for burglary purposes. Collins establishes the fault element; Jones and Smith establishes that a conditional or purposively limited permission can be exceeded so as to render the entrant a trespasser; and Walkington establishes that the limitation on permission may be geographical in nature. Read together, these authorities provide a comprehensive account of the entry-as-trespasser requirement.
The practical implications of Walkington are considerable. It means that burglary can be committed in premises that are open to the public โ supermarkets, offices, hotels, hospitals โ provided the defendant has entered a part of the building to which their permission does not extend and has done so with the requisite intent. The decision therefore prevents defendants from escaping liability by pointing to their initial lawful entry, and ensures that the statutory scheme operates purposively to protect the integrity of buildings and their contents.
Academic commentary has occasionally raised the question of how clearly a restricted area must be delineated before entry into it can constitute trespass, and Walkington does not provide a fully exhaustive answer to that question. The courts have not subsequently imposed a requirement of formal signage or physical barriers beyond what is reasonably apparent in context, but the principle of reasonable clarity โ implicit in the court's reasoning โ remains the operative standard. The case therefore leaves some room for fact-specific application, and this remains a point of academic interest in the burglary literature.