FCA Complaint Letter Template for UK Consumers

When a bank, lender, insurer or broker gets something wrong, a vague email rarely moves things along. An FCA complaint letter template gives you a clear structure, helps you set out the facts properly, and shows the firm you are making a formal complaint - not simply venting.

When to use an FCA complaint letter template

Use an FCA complaint letter template when you are unhappy with a UK financial services firm regulated by the Financial Conduct Authority, or expected to follow FCA complaint-handling rules. That might include a complaint about a bank account, credit card, loan, mortgage, insurance policy, investment product, payment service or debt collection activity.

A formal letter is especially useful where the issue has dragged on, the sums involved matter, or you need a paper trail. Plenty of complaints start by phone and go nowhere because nothing was recorded clearly. A posted letter puts your position, timeline and requested remedy in one place.

That said, a template is only useful if it matches your situation. Complaints about unauthorised transactions, unfair fees, irresponsible lending and poor claims handling all need slightly different detail. The structure can stay the same, but the facts and remedy should be specific.

What the FCA expects firms to do

The FCA does not usually resolve your complaint for you at first instance. Your complaint goes to the firm itself, and the firm is expected to follow FCA rules on complaint handling. In most consumer cases, it should investigate fairly and send you a final response within eight weeks.

That matters because your letter should be written with that process in mind. You are creating a record that can later be used if the matter goes to the Financial Ombudsman Service. A rushed, emotional note may feel satisfying for five minutes, but a calm and factual complaint is far more useful if the dispute escalates.

You should therefore include enough detail for the firm to identify the problem quickly, but not so much background that the key issue gets buried. Clear beats dramatic every time.

FCA complaint letter template

Use the following wording as a starting point and adapt it to your case.

Template wording

[Your full name] [Your address] [Postcode] [Email address] [Telephone number]

[Date]

Complaints Department [Name of firm] [Firm address] [Postcode]

Subject: Formal complaint under FCA complaint-handling rules

Dear Sir or Madam,

I am writing to make a formal complaint about [account / policy / agreement / reference number].

The issue concerns [brief description of the problem]. The relevant events are as follows:

• On [date], [what happened].
• On [date], [what happened next].
• On [date], I contacted your company by [phone / email / branch / chat] and [state outcome].
• Despite this, [explain what remains unresolved].

I believe your firm has acted unfairly because [set out why the treatment, charge, decision or delay was wrong]. This has caused me [financial loss, inconvenience, distress, credit file impact, missed payment, extra charges, delay or other consequence].

To resolve this complaint, I am asking you to [refund charges / correct my account / remove adverse credit information / pay compensation / reconsider your decision / provide a full explanation].

Please treat this letter as a formal complaint and investigate it in line with your obligations under the FCA's complaint-handling rules. I request your full written response within the applicable timeframe. If this matter is not resolved, I will consider referring it to the Financial Ombudsman Service.

I enclose or refer to the following supporting documents: [list any statements, screenshots, policy documents, letters or receipts].

Yours faithfully,

[Your name]

How to make the template stronger

The template above is a framework, not a magic phrase. What makes a complaint persuasive is the quality of the detail you put into it.

Start with dates. If the firm can follow the timeline, it is harder for it to sidestep the issue. Include reference numbers, account numbers and the names of staff members if you have them. If you were told something on the phone, say when, by whom, and what was said as accurately as you can.

Next, explain the harm clearly. If you lost money, state the amount. If the issue affected your credit file, missed a payment deadline or delayed an insurance payout, say so plainly. Firms are more likely to engage properly when the practical impact is obvious.

Finally, ask for a specific outcome. “Please sort this out” is too vague. “Refund the £185 fee, remove the default marker and confirm in writing that no further action will be taken” is much easier to assess.

Common mistakes that weaken a complaint

The most common problem is writing too much without saying anything precise. A five-page letter full of frustration but short on dates, sums and evidence can be less effective than a one-page complaint that gets straight to the point.

Another mistake is threatening action too early without understanding the process. It is fine to mention that you may refer the matter to the Financial Ombudsman Service if unresolved. It is less helpful to fill the letter with legal threats you may not follow through on. Formal, measured language tends to carry more weight.

It also helps to avoid mixing unrelated complaints into one letter. If your issue concerns both mis-sold insurance and a separate account closure, the firm may handle them differently. Combining everything can slow things down.

What to attach to your FCA complaint letter template

Evidence does not need to be elaborate. What matters is that it supports the points you are making. Good examples include statements, policy schedules, screenshots, emails, prior complaint references, receipts, default notices or records of charges.

You do not need to send originals unless specifically required. Copies are usually enough. If your case depends on a sequence of events, label the documents clearly so the reader can follow them without guessing.

If you do not have every piece of evidence, do not let that stop you. Send the complaint with what you have. A clear timeline and a reasonable explanation still matter.

Posting versus email

Email is quick, and some firms encourage it. But a physical letter still has advantages when the complaint is serious, time-sensitive or likely to be disputed later. Posted complaints feel more formal, are less easy to ignore, and create a stronger paper trail.

That is particularly useful where you are challenging a lender, insurer or debt collector and want clear proof of what was sent. If you are sending supporting documents or want tracked delivery, post is often the safer option.

For people who want that formality without printing at home or visiting the Post Office, PostRight lets you create and send a professionally formatted complaint letter online, with Royal Mail delivery options and no admin in the middle.

What happens after you send it

Once the firm receives your complaint, keep a copy of the letter and any proof of posting. Make a note of the date it was sent and the date it was delivered. If the firm contacts you by phone, follow up in writing so there is a record.

In many cases, the firm will acknowledge the complaint first and send a fuller response later. If it resolves the issue quickly and fairly, that may be the end of it. If not, you may receive a final response that you can challenge through the Financial Ombudsman Service, depending on the complaint and your eligibility.

Patience helps, but so does staying organised. A complaint is easier to escalate when your documents, dates and requested remedy are all consistent.

A final word on using an FCA complaint letter template

A good complaint letter does not need legal jargon to be taken seriously. It needs clear facts, a fair request, and the confidence to put your complaint in writing. If a financial firm has got something wrong, a properly structured letter is often the point where your case starts being handled properly.