A Jersey will that fails to comply with the formal requirements of the law is vulnerable to challenge. In Jersey, the consequences of poor execution can be devastating for those who believed they had made adequate testamentary provision, and for beneficiaries who find their inheritance cast into doubt.
I regularly see disputes arise where the execution formalities have not been properly observed, and the court must then decide whether the document can still be treated as valid. What often surprises people is how quickly these issues escalate from a minor procedural concern to a full-blown probate dispute.
The Legal Framework
The legal framework is set out in the Wills and Successions (Jersey) Law 1993. The principles are straightforward: a will must be in writing, signed by the testator, and witnessed by two independent witnesses. In practice, however, this is where problems emerge.
The Signature Requirement
The testator must sign the will. This seems elementary, but complications arise regularly in my practice.
The signature need not be a full formal signature. Initials or even a mark may suffice, provided it shows an intention to authenticate the document. Jersey law also permits another person to sign on behalf of the testator in prescribed circumstances, subject to strict statutory conditions designed to safeguard the testator’s intentions.
The position of the signature also matters. It should appear at the end of the will, although Jersey courts have shown some flexibility where it is clear the testator intended the document to be their final will. I have seen wills challenged where the signature appeared midway through the document, or on an intermediate page without explicit acknowledgment on the final page. The court’s response depends on the specific facts, but the safer approach is always to ensure the signature sits at the end.

Witness Requirements
Each witness must be present when the testator signs, or must acknowledge the testator’s signature immediately afterwards. The word “immediately” matters here. I have seen wills challenged successfully where witnesses were present at different moments, even if separated only by minutes. The law now makes limited provision for alternative arrangements, including certain forms of remote witnessing, but these exceptions are narrow and the conditions stringent.
Ordinarily, both witnesses should be present together at the same time when the will is executed. If they are not, and the circumstances suggest any ambiguity about whether they both witnessed the same act of execution, the will’s validity becomes questionable.
The witnesses must also be independent. A witness who benefits under the will, or whose spouse benefits, is not competent to witness. A witness who stands to inherit substantial sums has an obvious interest in upholding the document, which inevitably attracts suspicion.
Witnesses must also be mentally capable of understanding what they are witnessing. An extremely elderly or infirm witness, or one under the influence of alcohol or drugs at the time, might later be challenged as lacking the necessary capacity to act as a proper witness. Capacity is assessed at the moment of witnessing, and evidence of impairment at that point can unravel the entire execution.
Common Execution Failures
The most frequent failures I encounter involve incomplete witnessing. A will signed by the testator but witnessed by only one person may be invalid. I have also seen situations where the witnesses have signed but the testator has not, or where the signature appears on a page other than the final page without proper acknowledgment. These gaps often arise because the will has been prepared in draft form, circulated, reviewed, and then executed without careful attention to the order of formalities.
Another common issue arises where wills are executed informally at home without legal advice. Family members may believe they have done everything correctly when, in fact, the formalities have been overlooked. Testators sometimes assume that because everyone is present and the document is clearly intentional, the execution is valid. Unfortunately, while Jersey law does allow some limited flexibility in specific circumstances, it generally still requires close compliance with the prescribed formalities.
The gap between what people think constitutes a valid Jersey will and what the law actually requires is often wider than they expect.

The Court’s Discretion
Jersey courts have limited statutory powers and discretion, in defined circumstances, to admit to probate a document that does not strictly comply with the usual execution requirements, where they are satisfied that it was intended to express the testator’s testamentary intentions. This discretion is exercised sparingly, and the burden of proof lies with whoever seeks to rely upon it.
The threshold for establishing testamentary intention is high. The court will look at the language of the document, the conduct of the parties, and the circumstances surrounding execution. Mere evidence that the testator intended to leave their estate in a particular way is not enough. The document must demonstrate, on balance, that it was intended to be a will and that the formality failures were not material.
Get Advice Early
Early legal advice can clarify your position and help prevent costly disputes. Whether you are beneficiary concerned about a will’s validity, an executor uncertain whether to apply for probate, or a testator reviewing a recently executed will, the stakes justify professional scrutiny.
Timing is often crucial in will disputes, and delay can limit the options available or weaken your position. Advocate Alexander English and the Parslows Inheritance Legal Disputes Team can help you assess your position quickly and take decisive, proportionate steps to protect your interests.
Call +44 (0)1534 630530 or contact Parslows Inheritance Legal Disputes Team now for a confidential discussion.