Cutter v Powell
Strict rule - must be complete peformance of all obligations
Acros v E A Ronaasen and son
16th of inch difference, did not match description
Re Moore co v landauer
Differnce would make no impact (packaging different)
Readrdon smith line Ltd v Hansen tangen
Mere technicality will be ignored
Taylor v Webb
Divisible contract - various parts enforced seperatky
Sumpter v hedges
Acceptance of part peformance - must be a genuine choice to accept
Dakin v Lee
Substancial peformance - sum deduced based on cost to repair defective workmanship
Bolton v Mahadeva
Substancial peformance depends on what remains undone compared to the whole contract
Planche v Colburn
Prevention of peformance by other party - can claim damages for wasted time
Startup v Mac Donald
Tender of peformance - unreasonable refusal of peformance - claim for damages
Time of peformance considered essential = repudiation available
1) expressly stipulated that time is of the Essenes
2) circumstances show time is critical
3) one party gives the other a certain period to complete peformance or repudiation will occur after they have alreayd failed onve