Triodos Bank NV v Dobbs

Factual and Procedural Background

The appeal concerns the extent of liability under a personal guarantee executed by the Guarantor on 26 April 1996, which guaranteed payments due from the principal debtor Company under or pursuant to two loan agreements dated the same day. The loans initially amounted to £900,000, with the Guarantor's liability capped at £50,000. The loans were secured by a first mortgage, a floating charge, and an assignment of the Guarantor's life insurance policy.

In November 1998, the creditor Bank agreed to finance a second phase of the project and entered into two new loan agreements totaling £1,980,000, explicitly replacing the 1996 agreements. In September 1999, those 1998 agreements were themselves replaced by a further loan agreement ("the 1999 facility") raising the borrowing limit to £2.6 million. The 1999 facility expressly continued to rely on the original security, including the 1996 guarantee.

Following the project's financial difficulties, the Bank demanded repayment and appointed administrative receivers. After a shortfall on the sale of assets, the Bank sought to call on the Guarantor to pay under the 1996 guarantee. Summary judgment was granted in favor of the Bank in March 2002, declaring that the guarantee extended to the 1999 facility and that the Guarantor was estopped from denying this extension.

The Guarantor challenged this, arguing that the guarantee only applied to the original 1996 loan agreements and not to subsequent replacement agreements, despite references to the guarantee in later loan documents. The Guarantor also alleged mismanagement by the Bank and breach of contract, which were dismissed except for nominal damages. Permission to appeal was granted on the declarations but stayed pending these issues. The appeal was heard in April 2005.

Legal Issues Presented

1. Whether a personal guarantee given in respect of loan agreements dated 26 April 1996 extends to cover sums due under subsequent loan agreements which expressly replace the original agreements.
2. Whether the clause permitting the creditor to agree to amendments or variations of the loan agreements without reference to the guarantor applies to replacement agreements that substantially alter the original loan terms.
3. Whether the guarantor is estopped by convention from denying that the guarantee extends to the 1999 facility agreement.

Arguments of the Parties

Appellant's Arguments (Guarantor)

• The 1996 guarantee only applies to sums due under the original loan agreements and does not extend to subsequent replacement agreements, including the 1998 and 1999 loan agreements.
• The 1998 and 1999 agreements were new and substantially different contracts, not mere amendments or variations of the original agreements.
• The Guarantor did not assent to guarantee liabilities arising under the larger and materially different loan facilities of 1998 and 1999.
• The Guarantor denied that there was a common assumption that the guarantee extended to the 1999 facility, contesting the Bank’s estoppel claim.

Appellee's Arguments (Bank)

• The guarantee’s clause allowing the Bank to agree amendments or variations without reference to the Guarantor includes replacement agreements that are reschedulings or variations of the original loan agreements.
• The 1998 loan agreement 98/1056 was a rescheduling and therefore within the scope of the guarantee.
• The Guarantor is estopped by convention from denying that the guarantee extends to the 1999 facility, given the Bank’s and Guarantor’s conduct and assumptions.
• The guarantee expressly referenced the 1996 guarantee as continuing security for the 1998 and 1999 loans.

Table of Precedents Cited

Court's Reasoning and Analysis

The court analyzed the language of the 1996 guarantee, focusing on the phrase "under or pursuant to" the loan agreements and the clause permitting the Bank to agree amendments or variations without reference to the Guarantor. It concluded that while the Bank could make amendments or variations to the original loan agreements without the Guarantor’s consent, this did not extend to replacement agreements that constituted new and different contracts.

The court distinguished between amendments or variations (which the guarantee covered) and replacement agreements that imposed new obligations outside the scope of the original guarantee. The 1998 loan agreement 98/1056 was regarded as a permissible rescheduling within the guarantee’s scope, but the 1998 agreement 98/1057 and the 1999 facility were materially different, involving larger sums and different purposes, and thus not covered by the guarantee.

Regarding estoppel by convention, the court emphasized that a common mistaken assumption must be proven by clear evidence. The Guarantor expressly denied assuming the guarantee extended to the 1999 facility, making summary judgment inappropriate on this point. The court held that the Bank could not rely on estoppel without a trial to resolve factual disputes about the parties' assumptions.

In sum, the court held that the original guarantee did not extend to the 1999 facility as a matter of construction, and the estoppel claim required further factual investigation.

Holding and Implications

The appeal was allowed. The court set aside the earlier declarations that the 1996 guarantee extended to the 1999 facility and that the Guarantor was estopped from denying this extension.

The matter of estoppel by convention was remitted for trial due to unresolved factual issues. The Bank was permitted to proceed to trial on that issue if it chose. Costs were ordered accordingly, with a case management conference scheduled.

This decision clarified that a guarantee referring to liability under specific loan agreements does not automatically extend to replacement agreements that create new and materially different obligations, absent clear contractual language or assent. No new precedent was established beyond the application of existing principles on guarantee construction and estoppel by convention.