England and Wales only. Published Mon 24th Aug 2026. This describes the process and is not legal advice.
Every lasting power of attorney has to be signed by a certificate provider before the Office of the Public Guardian will register it. Most people have never heard the phrase until the form asks for one, and the choice looks like an afterthought. It is not. The wrong person makes the whole document invalid, and you usually find out months later.
This article explains what the certificate provider does, who is allowed to do it, why the list of people who cannot is so long, and why a neighbour you have known for two years is usually the easiest answer. England and Wales only, and an explanation of the process rather than legal advice.
The certificate provider is an independent person who confirms three things about you at the moment you sign: that you understand what the document does and what power it gives, that nobody is pressuring you into it, and that there is nothing fraudulent going on.
It is a safeguard built in for your benefit. A lasting power of attorney hands real authority to other people. The certificate is the law's way of making sure that the person handing it over knew what they were doing and chose to do it.
The Office of the Public Guardian will not register an LPA without a valid certificate. There is no way round it and no version of the form that skips it.
There are two routes. You need one person who fits either.
Someone who has known you well for at least two years. A friend, a colleague, a neighbour. The government's guide says they must be more than an acquaintance: a person who could honestly say they know you, not someone who nods in the street.
A professional with the skills to judge your understanding. Your doctor, a solicitor, or someone with comparable professional standing. A professional may charge a fee for doing it, and a GP practice may decline or take weeks.
In both cases the person must be 18 or over, and they must be in the room with you when you sign. They sign after you and before your attorneys. A certificate signed on a different day, or before your own signature, is one of the ways an application gets sent back.
This is the list that catches families. Your certificate provider cannot be:
The reason is independence. The certificate provider is vouching that you were not pressured. The people most likely to be applying pressure, or to benefit from the document, are the people closest to you and closest to your attorneys. So the law rules them all out, however honest they are. Your wife cannot certify you. Your son cannot. Your son's wife cannot, and neither can your daughter's partner or your stepson.
Notice that the exclusion runs to the attorneys' families as well as yours. If you have appointed a friend as your attorney, that friend's husband cannot be your certificate provider either.
The care home exclusion is there for the same reason. Someone who runs the place you live has an interest in your affairs, so they are ruled out even if they know you well.
Once the relatives are gone, people tend to reach for the doctor. That works, but it costs money, takes time and depends on a surgery that may not want the job.
In practice the easiest answer is nearly always a friend or a neighbour who has known you for two years or more. Our own experience is that neighbours are often the simplest people to get signed: they are independent, they know you, and they can be in the room at the right moment without a diary negotiation. A two-year neighbour who has had you round for tea qualifies. A two-year neighbour you wave at does not, because the guide asks for more than an acquaintance.
The test we suggest is this. Could they say, truthfully, "I have known them well for more than two years, I can tell they understand this, and nobody is making them do it"? If yes, they can be your certificate provider.
If you have more than one candidate, pick the one who is easiest to get into the same room as you, on the same day, with a pen.
If the certificate provider does not qualify, the LPA is invalid. The Office of the Public Guardian will not register it, and it writes to tell you so after the application has been in its queue.
How bad that is depends on timing.
If you still have capacity, you can fix it. Some errors can be corrected and resubmitted within three months for £46 rather than a fresh £92 fee, and the Office of the Public Guardian decides which errors qualify. Either way you are weeks or months behind, and every signature that came after the certificate has to be looked at again, because the signing order has to hold.
If you have lost capacity by the time the rejection arrives, it cannot be fixed. A lasting power of attorney needs your signature and your understanding, and you no longer have the second. The family is then in the position of having no LPA at all, which means an application to the Court of Protection for a deputy: £432 per application, months of waiting, and the court choosing who is appointed. That is the real cost of a certificate signed by the wrong person.
Before anyone signs, we ask four questions about the certificate provider:
Four yeses and the certificate is sound. One no and we find someone else before a single page is signed.
Everything else an LPA contains, from the two types to registration and cost, is in the complete guide to lasting power of attorney in England and Wales. If you would rather a person checked the whole document before you sign, that is what Power of Attorney Service does.
Power of Attorney Service is a trading name of Dead Easy Legal Ltd, registered in England and Wales.