Cancelling your will is known as revoking your will. You can do this at any time by simply destroying your will, either by tearing it up, shredding it or burning it. If you do this, you should be careful to ensure that no previous executed (signed and witnessed) wills are still in existence.
Alternatively, making a new will cancels any previous will - the first clause of a well drafted document is usually a revocation of all former wills. If you make a will online using our website, you can rest assured that your new will is valid.
If you do cancel your last will and testament, you could consider informing anyone who will be affected by your decision, for example beneficiaries, guardians and executors.