In legal circles, some rules are so ancient that they are often forgotten until they resurface with devastating consequences. One such principle is the Rule in Pigot’s Case, a legal doctrine dating back to 1614, which provides that a material alteration to a deed after it has been signed by one party, without the consent of the other, renders that document void. In the recent High Court decision, Mr. Justice Michael Green applied this 400-year-old rule to a modern mortgage dispute, proving that the sanctity of a signed deed remains a cornerstone of English law.
Background:
The appellant, Ms. Boult, appealed against an order of the County Court requiring her to give possession of her home plus a money judgement of £738,783.89 in favour of the respondent, Together Personal Finance Ltd. The respondent had lent the appellant £380,000 as a bridging loan secured by a legal charge over the house only. When the appellant attended her solicitors to sign the documentation in March 2018, she discovered that the charge initially included a separate 15-acre field she owned and refused to sign. New documents were prepared covering only the house, which she then executed. However, a solicitor, acting for the respondent, subsequently added the title number of the field in manuscript to the already-signed legal charge, believing instructions required both properties to be charged, and registered it against both titles without the appellant's knowledge or consent. The appellant discovered this months later and contacted the police, suspecting fraud. No prosecution followed, and the respondent eventually removed the charge from the field's title.
When the lender eventually sought a possession order to take her home due to non-payment, Ms. Boult defended the claim by arguing that the unauthorised alteration had rendered the entire mortgage deed void. The appellant invoked the rule in Pigot's Case (1614), which provides that a material alteration to a deed after execution by one party without the other's consent renders it void. The County Court Judge held that the rule did not apply because the alteration was an innocent mistake and was not material.
Decision:
The High Court allowed the appeal. Mr. Justice Michael Green rejected the lender's arguments that it was an "innocent mistake" by a solicitor. He clarified that for the rule to apply, the alteration must be "deliberate" and "material". He found that the act of writing a new title number onto a signed deed was inherently deliberate, regardless of whether the solicitor had fraudulent intent. More importantly, he ruled that materiality must be judged at the moment the change is made. Because the addition of the field potentially prejudiced Ms. Boult’s legal rights at the time—subjecting her land to a mortgage she had not agreed to—the deed became void the second the pen hit the paper. The fact that the lender later corrected the mistake was irrelevant; once a deed is voided by a material alteration, it cannot be "revived" by simply undoing the change.
Implications:
The implications of this ruling are profound for both lenders and borrowers. For financial institutions and legal professionals, it serves as a stern warning: a signed deed is a final, sacred document. Any attempt to "fix" or "update" a deed after execution via manuscript—no matter how well-intentioned or "administrative" the error may seem—risks making the entire security unenforceable. This highlights the absolute necessity for rigorous document control and ensures that any amendments are formally initialled or re-executed by all parties.
For borrowers, the judgement reaffirms a powerful defence. The Court noted that the rule is designed to deter people from "taking a chance" on altering documents. However, there is a catch. While the High Court set aside the possession order—meaning the bank could not take Ms. Boult’s home—it did not wipe out the underlying debt. Because Ms. Boult had actually received the loan money, the Court maintained the "money judgement" against her. This means that while the legal charge (the security) was void, the contractual obligation to repay the borrowed funds remained. This case serves as a reminder that, while technical legal rules can save a home from immediate repossession, they do not necessarily discharge the underlying financial responsibility.
