Best Online Will UK: How to Choose

How to compare online will services in the UK and pick one that is properly drafted, clearly priced and legally valid.

Reviewed by the Estate Advisory Group editorial teamLegally reviewed: 13 August 2026Last updated: 13 August 2026

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In short

  • The best online will service asks structured questions and produces wording specific to your answers
  • Clear, written signing and witnessing guidance matters more than any feature list
  • One-off pricing with no hidden extras is worth more than a slightly lower headline price
  • Look for the ability to make free amendments before you finalise and sign
  • Complex estates, businesses or blended families need a solicitor, whatever the provider claims

Searching for the 'best' online will usually means you want confidence that whatever you pay for will actually work when it matters, appointing the right people, saying clearly who gets what, and standing up as a valid legal document. There is no single provider that suits everyone, but there is a clear set of things worth checking before you hand over any card details.

Price, speed and marketing claims are the easiest things to compare between providers, and the least useful. What actually decides whether an online will is any good is the quality of the questions it asks you, how clearly it explains signing and witnessing, and whether the final wording reflects your actual circumstances rather than a generic template.

myposhwill.co.uk offers a single will for a one-off £69, or mirror wills for couples at £89, built from your answers with no subscription attached. This guide sets out what to look for from any UK provider, so you can judge for yourself.

Start with what the will needs to do, not the provider's marketing

Before comparing services, be clear about what your will needs to achieve: appointing an executor, naming beneficiaries, dealing with any specific gifts, and setting out who inherits the residue of your estate. Providers often lead with speed or price, but the real test is whether the finished document covers these basics clearly and unambiguously for your situation.

If you have children under 18, check the service actively prompts you to name guardians. If you own property jointly with a partner, check it asks how that is held, since this affects whether your will can even deal with your share. A good provider surfaces these questions rather than leaving you to think of them yourself.

Compare pricing structures properly

Some UK providers advertise a low headline price and then charge separately for printing, binding, storage or amendments, or move you onto a recurring subscription. Others quote a genuinely all-in one-off fee. Read the pricing page in full and work out what you actually need to pay to end up with a signed, valid will.

A one-off £69 for a single will, or £89 for mirror wills covering both partners, with no subscription, is straightforward to budget for and compares well against solicitor fees that commonly run to several hundred pounds for even a simple will.

Check how clearly signing and witnessing is explained

Under section 9 of the Wills Act 1837, your will is only valid if it is in writing, signed by you (or by someone else in your presence and at your direction), with your signature made or acknowledged in front of two witnesses present together, who then also sign in your presence. This single step is responsible for more failed DIY wills than any drafting mistake.

The best online services set this out step by step in plain English, ideally as a checklist, rather than assuming you already know the rules. See our guide on how to sign a will for the full process, including who cannot act as a witness.

Look for the ability to fix mistakes before you sign

Everyone reviewing their own will spots something they want to change, a name spelled wrong, a gift they forgot, an executor they want to reconsider. A good provider lets you go back and amend your answers freely before the will is finalised, at no extra cost, rather than treating each change as a new purchase.

This matters more than most feature comparisons, because it is the difference between a will that genuinely reflects your wishes and one you signed simply because starting again felt like too much hassle.

Know when 'best online' still means 'see a solicitor'

No online service, however well built, is the right tool for every estate. If you run a business, hold assets overseas, want to set up an ongoing trust, or need to balance a spouse against children from an earlier relationship, a solicitor's judgement is worth paying for.

For a straightforward estate, a spouse or partner, children, and no unusual assets, a well-built online will is a genuinely good choice, not just a cheaper one. The best provider for you is simply the one that fits your circumstances honestly.

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This guidance covers the law of England and Wales and is general information, not legal advice about your circumstances. The rules in Scotland and Northern Ireland differ.