Validating contracts
Offer plus acceptance
Consideration - not Scots law
Consent
Capacity
Formality
No legal prohibition
Implied revocation
In negotiations one party dies
Doesn’t require communication of the fact to the offeree
Express revocation
offerer is withdrawing the offer
must be communicated
Breach of contract
Defective performance
Repudiation
One party backs out of contract after agreement
Request an order of specific implement/ performance
Lien
party not in breach
retaining or refusing deliver goods in his possession until other party performs their contractual obligations