Dealer in Dunlop products had agreement with Dunlop that they would
obtain undertaking from retailers they sold to not to sell Dunlop products
below list price.
Dealers obtained such undertaking from Selfridge.
S alleged to have breached undertaking.
House of Lords held that Dunlop could not sue S as Dunlop had provided no
consideration for S’s undertaking.
Viscount Haldane gave privity doctrine explicit form:
‘Only a person who is party to a contract can sue on it. Our law knows
nothing of a jus quaestium tertio arising
by way of contract’