Welcome to the World of Contract Law!
Hello! Today, we are diving into one of the most exciting and practical parts of the law: Formation of a Valid Contract. Think about how many times you "contract" in a day—buying a bus ticket, downloading an app, or even buying a snack.
By the end of these notes, you’ll understand exactly what makes an agreement legally binding and what is just a simple promise. Don't worry if it seems like a lot of rules at first; we will break it down step-by-step using real-life stories!
1. The "Ingredients" of a Contract
For a contract to be "valid" (legally binding), it needs three main ingredients. If one is missing, the contract usually collapses like a cake without flour.
1. Agreement (Offer and Acceptance)
2. Consideration (The "Price" paid)
3. Intention to Create Legal Relations (The serious intent to be bound)
2. Agreement: The Offer
An offer is a clear statement of the terms upon which a person is willing to be bound.
Common Mistake to Avoid: Not everything that looks like an offer is one! Many things are actually an Invitation to Treat (ITT). This is just an invitation for someone else to make an offer.
Offer vs. Invitation to Treat
• Shop Displays: Items in a shop window are ITTs, not offers.
Example: In the case of Fisher v Bell, a shopkeeper displayed a flick knife in his window. Even though selling it was illegal, he wasn't "offering" it for sale in the legal sense; he was inviting customers to come in and offer to buy it.
• Advertisements: Most ads are ITTs.
Example: In Partridge v Crittenden, an ad for birds was an ITT, not an offer. This protects sellers from running out of stock and being sued by thousands of people!
Ending an Offer
An offer doesn't stay open forever. It can end by:
• Revocation: The person who made the offer takes it back before it's accepted.
• Rejection: The person receiving the offer says "No."
• Counter-offer: Changing the terms of the offer. This "kills" the original offer.
Example: In Hyde v Wrench, a man offered to sell a farm for £1,000. The buyer offered £950. When the seller said no, the buyer tried to accept the original £1,000. The court said the original offer was dead because of the counter-offer!
• Lapse of Time: If no time limit is set, the offer ends after a "reasonable" time.
Quick Review: An offer is a firm "Yes, I will," while an Invitation to Treat is a "Maybe, talk to me."
3. Agreement: Acceptance
Acceptance is the final and unconditional agreement to all the terms of the offer. It must be a "mirror image" of the offer—you can't change anything!
Rules of Acceptance
1. Communication: Generally, you must tell the person you are accepting.
Analogy: If you shout "I accept!" into a dark tunnel and no one hears you, there is no contract.
2. Silence is NOT Acceptance: You cannot force a contract on someone by saying "If I don't hear from you, we have a deal."
Example: In Felthouse v Bindley, an uncle tried to buy a horse this way. The court ruled there was no contract because the nephew hadn't communicated his acceptance.
The "Postal Rule" (A Special Exception)
If you use the post to accept, the acceptance happens the moment the letter is placed in the post box, even if it gets lost or delayed!
Memory Aid: Think of the letter as a "Magic Letter." As soon as it hits the bottom of the red post box, POOF!—the contract is born.
Case: Adams v Lindsell.
4. Consideration
In English law, a contract is a bargain. You can't get something for nothing. Consideration is the "price" you pay for the other person’s promise.
The Rules of Consideration
• Sufficient but not Adequate: The courts don't care if you made a bad deal. If you sell a Ferrari for £1, that is "sufficient" consideration because £1 has value. The law doesn't need the price to be "adequate" (fair).
Example: In Chappell & Co Ltd v Nestle Co Ltd, chocolate bar wrappers were considered valid consideration!
• Past Consideration is NO Consideration: You cannot use something you already did in the past as payment for a new promise.
Example: If you wash your neighbor's car as a favor, and afterward they say "I'll give you £10 for doing that," you cannot sue them if they don't pay. The work was already done before the promise was made. (Case: Re McArdle).
• Existing Duties: Generally, doing something you are already legally required to do is not new consideration.
Example: In Stilk v Myrick, sailors couldn't claim extra pay for finishing a voyage because they were already contracted to do it.
Key Takeaway: Consideration is the "exchange" (I give you this, you give me that).
5. Intention to Create Legal Relations (ITCLR)
Even with an offer, acceptance, and money, there is no contract unless the parties meant for the law to get involved if things went wrong.
Two Main Presumptions
1. Social and Domestic Agreements: The law assumes that family and friends do not intend to be legally bound.
Example: In Balfour v Balfour, a husband's promise to pay his wife an allowance while he was away was just a domestic promise, not a legal contract.
Exception: If a couple is separating, they often DO intend for their agreements to be legal (Merritt v Merritt).
2. Business/Commercial Agreements: The law assumes that businesses do intend to be legally bound. It is very hard to argue that a business deal wasn't "serious."
Example: Edwards v Skyways.
Summary Checklist for a Valid Contract
If you are looking at a problem question, ask yourself:
• Was there a clear Offer (not just an ITT)?
• Was there a "mirror image" Acceptance that was communicated?
• Did both sides give Consideration (something of value)?
• Was it a Business deal (likely a contract) or a Family deal (likely not)?
Don't worry if this seems tricky at first! Law is all about practice. Try to spot the "offers" and "invitations to treat" next time you go to the mall!