Why LetterSure writes better UK letters — every time
ChatGPT is a remarkable tool. But when it comes to writing professional UK letters, it has real limitations — and most people don't realise until they're staring at a letter that looks wrong, sounds odd, or worse, could damage their position. Here is an honest comparison.
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Write my letter — from £6.99Getting started
ChatGPT
You start with a blank box. You need to know what to ask, what information to include, and how to frame the request. Most people don't know what makes a good letter — which is exactly the problem.
LetterSure ✓
You answer a guided form. LetterSure asks you the right questions — your situation, the outcome you want, the tone you need. You don't need to know anything about letter writing.
UK letter formatting
ChatGPT
ChatGPT writes letters in a generic format. It often uses American conventions — wrong date format, wrong address layout, wrong sign-offs. A letter that looks American undermines your credibility with UK organisations.
LetterSure ✓
Every LetterSure letter uses correct UK formatting — British English, DD Month YYYY date format, correct address layout, appropriate UK salutations and sign-offs.
Legal safety
ChatGPT
ChatGPT will happily write letters containing legal threats, legislation citations, and legal conclusions if you ask it to — or even if you don't. This can seriously damage your position in a dispute.
LetterSure ✓
LetterSure has built-in guardrails that block legal language from every letter. No threats, no legislation, no legal conclusions. Personal correspondence only — which protects you.
Downloading your letter
ChatGPT
ChatGPT gives you text on a screen. You have to copy it, paste it into Word, format it yourself, fix the layout, and save it. That takes time and the result often looks messy.
LetterSure ✓
One click downloads your letter as a professionally formatted PDF or Word document, ready to print and post or attach to an email.
Responding to letters
ChatGPT
You can paste a letter into ChatGPT and ask it to respond — but you need to know what to ask, how to frame the request, and how to check the output. The result may include legal language or incorrect UK conventions.
LetterSure ✓
LetterSure's respond feature reads the letter you received and writes the perfect reply. Paste the letter, describe what you want to say, and get a professional response with all the right guardrails applied.
Cost
ChatGPT
ChatGPT is free — if you already have an account, know how to prompt it effectively, and are happy to spend time formatting the result yourself.
LetterSure ✓
LetterSure costs £6.99 per letter or £12.99/month for unlimited. You are paying for speed, quality, UK-specific formatting, legal safety, and a letter that is ready to send immediately.
If you are a confident writer, know exactly what you want to say, understand UK letter conventions, and are happy to format the output yourself — ChatGPT is a perfectly reasonable free option. We would rather be honest about this than oversell our service.
You are not sure what to include
LetterSure's guided form ensures you include everything that matters — and nothing that could hurt you.
You need a letter that looks professional
A PDF or Word document looks far more serious than a copy-paste from a chat window.
You are dealing with a dispute
Legal guardrails protect you from accidentally writing something that damages your position.
You need to respond to a letter you received
LetterSure reads the letter and crafts the perfect reply — ChatGPT requires you to know what to ask for.
You need multiple letters
LetterSure Pro gives you unlimited letters for £12.99/month — cheaper than a single hour of a solicitor's time.
You want it done in under 3 minutes
No prompting, no formatting, no fiddling. Answer the form and download.
Ready to try LetterSure?
Generate a professional UK letter in under 3 minutes. Download as PDF or Word. From £6.99.
Write my letter now — from £6.99Or get Pro for £12.99/month for unlimited letters
LetterSure is not a law firm. Letters are personal correspondence drafts and do not constitute legal advice.