Pharmaceutical Society v Boots Cash Chemists ([1952] 2 QB 795)
Invitation to offer in self-service shopping — a clear, classroom-style explainer with timeline, IRAC, mnemonics, and FAQs.
 
    Table of Contents
Quick Summary
In a self-service shop, items on shelves are invitations to offer, not offers. The customer makes an offer at the till. The shop (with the pharmacist present for listed drugs) accepts by taking payment. Until then, the customer can put items back.
Issues
- Are shelf displays binding offers?
- When is acceptance complete in a self-service store?
- Did Boots breach the law on supervised sales of scheduled poisons?
Rules
Invitation to Offer
Goods on shelves invite customers to make offers. The offer is made at the cashier; the acceptance happens upon payment.
Pharmacist Supervision
For listed drugs, sale must be supervised. This is satisfied when the pharmacist supervises at the till where the contract is formed.
Facts (Timeline)
 
          Arguments
Appellant (Pharmaceutical Society)
- Display on shelves amounts to an offer.
- Customer accepts by picking up; thus sale occurs without supervision.
- Contrary to s.18(1) of the 1933 Act.
Respondent (Boots)
- Display invites offers; contract forms only at checkout.
- Pharmacist supervises at the till; law satisfied.
- Customers can change mind before payment.
Judgment
 
          Held: For Boots. Shelf display is an invitation to offer. The customer’s offer at the till is accepted by the cashier/pharmacist on payment. No breach of the Act.
Key effect: Customers are not bound when they pick up items; they can return them before paying.
Ratio Decidendi
Shop displays are invitations. Contract forms at the cashier, where acceptance and statutory supervision can occur. This keeps consumer choice alive and ensures lawful control over restricted goods.
Why It Matters
- Core authority for invitation to offer in retail.
- Explains how consumer freedom and statutory safeguards work together.
- Useful for exam problems on offer & acceptance and regulated goods.
Key Takeaways
- Shelf display = invitation; not an offer.
- Offer happens at till; acceptance on payment.
- Pharmacist supervision valid at checkout, not at shelf.
Mnemonic + 3-Step Hook
Mnemonic: “Shelf Says: See & Select; Till Says: Deal Done.”
- See: Shelf invites you.
- Select: You choose, but can change.
- Deal Done: Only when pharmacist/cashier accepts payment.
IRAC Outline
Issue
When does a sale form in self-service stores? Are shelves offers?
Rule
Display = invitation. Offer at till. Acceptance on payment under pharmacist’s supervision for listed drugs.
Application
Boots’ process fits the rule; customer can still refuse before paying; supervision occurs at acceptance point.
Conclusion
No breach; contract forms at the till; shelves are invitations only.
Glossary
- Invitation to Offer
- A step before an offer—invites customers to propose a deal.
- Acceptance
- Final agreement to the offer, here at the cash desk on payment.
- Supervision
- Required presence of a pharmacist for regulated drugs at the point of sale.
FAQs
Related Cases
Fisher v Bell
Invitation to OfferDisplay of a flick knife in shop window was not an offer to sell.
Partridge v Crittenden
AdvertisementsAdvertisements are usually invitations to treat, not offers.
Carlill v Carbolic Smoke Ball
Unilateral OfferAn ad can be an offer if it promises reward on specified performance.
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