The Effect of a Sub-Sale or Pledge by the Buyer under Section 53 of the Sale of Goods Act, 1930: The Seller's Assent, Transfers of Documents of Title, and the Pledgee's Rights

A buyer who has not paid his seller may nonetheless resell the goods or pledge them, often while they are still in transit. Section 53 decides whose claim prevails. The general rule is that the buyer's dealings do not affect the unpaid seller: his lien and right of stoppage survive a sub-sale, unless he assented to it. The exception is where a document of title has been transferred to a person taking it in good faith for value. Then commerce prevails over the seller's security: a transfer by way of sale defeats his rights entirely, and a transfer by way of pledge subjects them to the pledgee's.

The general rule, the document of title exception, and the marshalling provision

1. The Section

Section 53, Sale of Goods Act, 1930

(1) Subject to the provisions of this Act, the unpaid seller's right of lien or stoppage in transit is not affected by any sale or other disposition of the goods which the buyer may have made, unless the seller has assented thereto:

Provided that where a document of title to goods has been issued or lawfully transferred to any person as buyer or owner of the goods, and that person transfers the document to a person who takes it in good faith and for consideration, then, if such last mentioned transfer was by way of sale, the unpaid seller's right of lien or stoppage in transit is defeated, and, if such last mentioned transfer was by way of pledge or other disposition for value, the unpaid seller's right of lien or stoppage in transit can only be exercised subject to the rights of the transferee.

(2) Where the transfer is by way of pledge, the unpaid seller may require the pledgee to have the amount secured by the pledge satisfied in the first instance, as far as possible, out of any other goods or securities of the buyer in the hands of the pledgee and available against the buyer.

2. The General Rule

A sub-sale by itself changes nothing. The sub-buyer takes whatever the buyer had, subject to the unpaid seller's rights over the goods.
The sub-buyer's remedy is against his own seller, the original buyer.
The exception for assent reflects the principle that a seller who agrees to the sub-sale can hardly complain of it, but the assent must be real.

📖 Mordaunt Brothers v. British Oil and Cake Mills Ltd., [1910] 2 KB 502

Facts: Buyers of oil sub-sold part of it and directed the sellers to deliver to the sub-buyers. The sellers acknowledged the delivery orders but had not been paid. When the buyers failed, the sellers asserted their lien, and the sub-buyers argued that the sellers had assented to the sub-sale.

Held: The sellers kept their lien. Assent within the section means assent given in such circumstances as to show that the seller intends to renounce his rights against the goods. Mere knowledge of the sub-sale, or acknowledgment of delivery orders in the ordinary course, was not enough.

Ratio: The seller's assent to a sub-sale defeats his lien only where it shows an intention to give up his security and to look to the buyer alone for the price.

3. Transfers of Documents of Title

The document must have been issued or lawfully transferred to the buyer as buyer or owner of the goods.
The buyer must transfer it onward to a person who takes it in good faith and for consideration.
A transfer by way of sale defeats the unpaid seller's lien and right of stoppage altogether. The sub-buyer takes the goods free of them.
A transfer by way of pledge leaves the seller's rights alive, but they can be exercised only subject to the pledgee's rights: in practice, the seller can reach only what is left after the pledgee is satisfied.

This exception is the commercial counterpart of the rule in Lickbarrow v. Mason (1787), where the transfer of a bill of lading to a good faith purchaser for value defeated the seller's right of stoppage. Documents of title exist to be traded; a banker or merchant who advances money against them must be able to rely on them without inquiring into the state of accounts between the seller and the buyer.

4. Marshalling Under Section 53(2)

Where the transfer was a pledge, Section 53(2) softens the blow to the seller. He may require the pledgee to satisfy the secured debt, so far as possible, out of other goods or securities of the buyer that the pledgee holds and can realise. Only if those are insufficient may the pledgee look to the goods the seller supplied. This is the equitable doctrine of marshalling applied to sale: a creditor with two funds to draw on should not defeat another claimant who can reach only one.

5. The Position Stated Shortly

Section 53(1): the unpaid seller's lien and right of stoppage survive a sub-sale or other disposition by the buyer.
They are defeated by the seller's assent, which must show an intention to renounce his rights against the goods.
Mordaunt Bros: acknowledging delivery orders was not such assent.
Where a document of title is transferred to a good faith transferee for value, a transfer by sale defeats the seller's rights.
A transfer by way of pledge leaves those rights exercisable only subject to the pledgee's.
Section 53(2): the seller may require the pledgee to look first to the buyer's other goods or securities.