What is a letter before action?

A letter before action (LBA) is a formal notice sent before starting court proceedings. It sets out your claim, the legal basis (e.g. Consumer Rights Act 2015, Housing Act 1988), the remedy you seek, and a deadline to respond — typically 14 days. Civil Procedure Rules require this step before most court claims, and courts take a dim view of parties who skip it.

Can I write my own legal letter?

Yes. You do not need a solicitor to write a legal letter. What matters is citing the correct legislation, stating your claim with precise dates and amounts, and giving a clear deadline. A well-drafted letter citing the right Act and section often resolves disputes without court proceedings — and costs nothing extra to send.

Does a legal letter actually work?

In many cases, yes. Most businesses, landlords, and employers respond when they receive a formally worded letter that cites specific legislation and mentions court or tribunal proceedings as the next step. It signals you know your rights and are prepared to escalate — which is often enough to get a resolution.

What UK legislation covers consumer complaints and refunds?

The Consumer Rights Act 2015 is the primary law. Section 9 requires goods to be of satisfactory quality; section 20 gives you the right to a full refund within 30 days if goods are faulty. For services, section 49 requires reasonable care and skill. For distance/online purchases, the Consumer Contracts Regulations 2013 give you a 14-day cooling-off period.

22 August 2026

Landlord Raising Your Rent? How to Challenge a Rent Increase (UK) — and Why the Rules Just Changed in Your Favour

A rent increase lands in your inbox or through the door, and it feels like a done deal — a number on headed paper, take it or leave it. It is not. A landlord in England cannot simply raise your rent to whatever they like, whenever they like. They have to follow a strict legal process, and if they get it wrong, or the figure is above the going rate, you have a genuine right to challenge it — at a specialist tribunal, for a modest fee. And thanks to a change in the law that took effect on 1 May 2026, challenging is far less risky than it used to be. Here is how it works.

General information for England (Scotland and Wales use separate systems — see below). Not legal advice. Current as at August 2026 — forms, fees and commencement dates change, so always check the current position on gov.uk before you act.

The rules just changed in your favour — read this first

For years, the single biggest reason tenants did not challenge a rent increase was fear: the tribunal could set an open-market rent that was actually higher than the one the landlord had asked for, leaving you worse off for daring to object. That risk has been removed. Under the Renters’ Rights Act 2025, in force since 1 May 2026, the tribunal can now only confirm the landlord’s proposed rent or reduce it — it cannot set it higher than what the landlord put in the notice. In plain terms: challenging a rent increase can no longer backfire by making your rent go up. The worst realistic outcome is that the tribunal agrees with the landlord.

First: can your landlord even raise the rent right now?

The Renters’ Rights Act 2025 did more than change the tribunal’s powers. On 1 May 2026 it converted assured shorthold tenancies into periodic assured tenancies — fixed terms for these tenancies were abolished, automatically, without tenants having to do anything. One important knock-on effect: a “rent review clause” buried in your tenancy agreement is no longer the mechanism your landlord can rely on. Whatever the paperwork says, there is now essentially one lawful route to increase the rent on a periodic assured tenancy: a formal statutory notice.

“But my contract has a clause letting them put the rent up.” Since 1 May 2026, contractual rent-review clauses in assured tenancy agreements are no longer the route to a valid increase. Your landlord must use the statutory process below (or you can simply agree a new rent between yourselves in writing — but you are never obliged to agree, and if you do not, the statutory route with its right of challenge is what applies).

What a valid rent-increase notice must look like

The statutory route is a notice under section 13 of the Housing Act 1988 (as amended by the Renters’ Rights Act 2025). For that notice to be valid, it generally has to tick several boxes:

The right form. It must be given on the prescribed form (the current version is Form 4A). A landlord’s own letter, email or text saying “your rent is going up” — even with all the same information — does not count. The prescribed form matters.
Enough notice. You must be given at least two months’ notice before the new rent starts (this minimum increased under the 2025 Act).
Not too often. The rent can only be increased this way once in any 12-month period. Many advisers also note an increase should not take effect within the very first year of a new tenancy — check your dates.

If the notice is on the wrong form, gives too little notice, or comes too soon after the last increase, it may simply be invalid — which is itself a reason to question it rather than pay.

How to challenge the increase: the First-tier Tribunal

If you think the proposed new rent is more than the going rate for a similar property in your area, you can refer the increase to the First-tier Tribunal (Property Chamber). This is the independent body that decides what an open-market rent for your home should be. You do not need a solicitor, and the process is designed to be used by tenants directly.

The deadline that ends the right to challenge

You must apply to the tribunal before the date the new rent is due to take effect — the “starting date” on the section 13 notice. Miss that date and, in most cases, the increase simply takes effect and the chance to challenge it is gone. As soon as a notice arrives, diarise that starting date and give yourself plenty of room — do not leave the application to the last day.

There is now a fee — but a modest one. Applying to the tribunal to challenge a rent increase used to be free; a small application fee was introduced from May 2026 (recently reported to be in the region of £47). Do not rely on that figure from this article — check the current amount on gov.uk before you apply, and note that fee reductions or remission are available if you are on a low income or certain benefits.

What the tribunal actually does

The tribunal looks at what your home would reasonably let for on the open market — comparing it with similar local properties — and decides the rent on that basis. Remember the change we opened with: it can confirm the landlord’s figure or set a lower one, but not a higher one. Its decision on the rent normally takes effect from the date of the decision (it is not backdated to punish you for challenging), and where paying immediately would cause you real hardship the tribunal has a discretion to delay the start of the new rent. Whatever it decides, that becomes your rent — so a challenge is worth making when you have a genuine reason to think the increase is above the market rate, not merely because any increase is unwelcome.

A separate right: challenging the rent at the start of a tenancy

Do not confuse two different things. The route above is for a mid-tenancy increase served by section 13 notice. Separately, if you have just moved in and believe the initial rent itself is significantly above the market rate, there is a distinct right to ask the tribunal to look at it within the early months of the tenancy. It is a different application with different triggers — if that is your situation, check the specific rules for a new-tenancy rent challenge rather than assuming the section 13 process applies.

One more thing the new rules changed: bidding wars

The Renters’ Rights Act also tackled “rental bidding”. Landlords and letting agents in England must now advertise a property at a single, clear asking rent and must not invite or accept offers above it. If you were pushed into offering over the advertised rent to secure a property, that practice is now prohibited and enforced by local councils. It is a separate issue from a section 13 increase, but it is part of the same shift in the balance of power towards tenants — worth knowing.

Scotland and Wales: different systems

Everything above — section 13, Form 4A, the First-tier Tribunal (Property Chamber), the Renters’ Rights Act — is England only. Do not apply these forms or bodies elsewhere:

Scotland — private tenancies run under the Private Housing (Tenancies) (Scotland) Act 2016. A landlord must give at least three months’ notice on the prescribed Scottish form, and you refer a disputed increase to Rent Service Scotland (with a route on to the tribunal), generally within 21 days. The rules on whether an adjudicator can set a higher rent are on a different timetable from England — check the current Scottish position before relying on the “can only go down” point.
Wales — occupation contracts run under the Renting Homes (Wales) Act 2016, with its own prescribed notice (Form RHW12), a two-month minimum notice, and a referral route to the Residential Property Tribunal that does not apply identically to every contract-holder. Check the Welsh rules for your specific contract.

When in doubt about which country’s rules apply, that is decided by where the property is, not where you or the landlord live.

Putting your challenge in writing

Whether you are formally referring an increase to the tribunal or simply writing to your landlord to say the increase is invalid, disproportionate, or above the market rate, a clear, firm letter helps. A good one states which notice you are responding to, sets out precisely why you are challenging it — wrong form, too little notice, too soon, or above the going rate — and makes clear you intend to exercise your right to refer the matter to the First-tier Tribunal if it is not withdrawn or reconsidered. Measured and specific beats angry every time, and it creates a written record if the dispute goes further.

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Sources: Housing Act 1988 (sections 13 and 14, as amended); Renters’ Rights Act 2025 (assured tenancy reforms, rent-increase procedure and tribunal powers, and rental-bidding provisions; main commencement 1 May 2026); First-tier Tribunal (Property Chamber) guidance and gov.uk “challenge a rent increase” guidance; Shelter England and Citizens Advice guidance on rent increases; Private Housing (Tenancies) (Scotland) Act 2016 and Rent Service Scotland guidance; Renting Homes (Wales) Act 2016 and Residential Property Tribunal Wales guidance. Current as at August 2026. Forms and fees change — always check gov.uk. General information for the UK, not legal advice.