The Court of Appeal ruled on 30 April 2026 that if you cannot prove a tenant received a gas safety certificate before they moved in, your Section 21 notice is permanently invalid — and later certificates cannot fix it. The landlords have now won permission to appeal to the Supreme Court, but that ruling has not happened yet. Several hundred cases are reportedly stayed awaiting the outcome.
Section 21 is gone for new notices. But if you served one before 1 May 2026 and have proceedings still working through the courts, this ruling could decide the outcome — and it has nothing to do with anything you did wrong recently. It turns on paperwork from years ago.
What the Court of Appeal actually decided
On 30 April 2026, the Court of Appeal handed down judgment in the combined appeals of Harker v Hubert and Muca v El Amrani [2026] EWCA Civ 515.
The question: what happens if a landlord cannot prove a tenant was given a gas safety certificate before they first moved in?
The Court’s answer was unambiguous. If that pre-occupation certificate cannot be evidenced, the defect is permanent. Serving compliant gas safety certificates every year since does not cure it. The Court explicitly rejected the argument that providing the two most recent certificates is enough — overturning what several lower courts had previously allowed.
The rule applies to every assured shorthold tenancy granted after 1 October 2015, even where the tenant first moved in under an earlier agreement before that date.
Why this is so severe
Picture a landlord who let a property in 2016, has ten years of properly served annual gas safety certificates, and served a Section 21 notice in April 2026 relying on that long compliance history.
If they cannot now produce evidence that the very first certificate was handed to the tenant before they moved in a decade ago, the notice is invalid. Under the regulations, landlords are only required to keep gas safety records until two further checks have taken place — so the original document may have been lawfully thrown away years before anyone thought to ask for it.
A landlord who has done everything right for years can still lose on a technicality from the very start of the tenancy.
The Supreme Court appeal
The landlords in Harker v Hubert have been granted permission to appeal to the Supreme Court. No hearing date or ruling has been announced. Be wary of anything claiming the Supreme Court has already decided this — it has not.
One legal commentator estimates several hundred possession cases are currently stayed, waiting to see which way this goes. Even if the landlords ultimately win, it is unlikely to help anyone whose case has already been dismissed under the Court of Appeal’s ruling — though an out-of-time appeal may be possible in some circumstances.
Does this affect you?
Only a specific group, since Section 21 no longer exists for new notices:
- You served a Section 21 notice before 1 May 2026
- You issued possession proceedings within the transitional window, by 31 July 2026
- Those proceedings are still live — not yet decided
- The tenancy began after October 2015, or under an earlier agreement that continued past that date
If all of that applies, your case could be stayed, dismissed, or decided on this point specifically. See our guide on what replaced Section 21 if you need to understand the wider transitional picture.
Wales: the equivalent no-fault route still requires gas safety compliance, so this ruling continues to matter there for the foreseeable future, independent of the Supreme Court outcome in England.
What to do if you have a live claim
- Find your original pre-occupation gas safety certificate — the one from before the tenant first moved in, not your most recent one.
- Check you can evidence it was actually given to the tenant at the time, not just that it existed.
- If you cannot, take advice immediately on whether your claim is affected and what options remain.
- Ask your solicitor whether your case should be stayed pending the Supreme Court outcome, rather than risk a dismissal now.
- Do not assume a recent certificate saves you. The Court of Appeal specifically rejected that argument.
The lesson for record-keeping generally
Even though Section 21 is gone, the underlying lesson is not.
The statutory minimum for retaining gas safety records is short — broadly, until two further checks have taken place. This case shows why that minimum is not always enough. A document that was lawfully destroyed years ago can still decide a case today.
Going forward, under Section 8 the same specific gas safety trap does not apply in the same way — but evidence generally is what decides possession claims now. Keep the pre-occupation gas safety certificate for every tenancy indefinitely, not just for the statutory minimum. It costs nothing to hold onto a PDF, and this case shows exactly what it can cost not to.
Frequently asked questions
Has the Supreme Court ruled on this yet?
No. Permission to appeal has been granted, but no hearing date or decision has been announced. The Court of Appeal’s ruling from 30 April 2026 remains the current law.
Does this affect new tenancies or Section 8 claims?
Not directly. Section 21 no longer exists for new notices, so this ruling is relevant to pre-1 May 2026 Section 21 claims still working through the courts. The record-keeping lesson applies more broadly.
I have a recent gas safety certificate — doesn’t that count?
No. The Court of Appeal explicitly rejected the argument that later certificates can cure a missing pre-occupation one. Only proof of the original certificate, given before the tenant moved in, satisfies the requirement.
What if my possession claim has already been dismissed?
Take advice on an out-of-time appeal. It may be possible in some circumstances, but this is genuinely fact-specific and needs a solicitor rather than general guidance.
Does this apply in Scotland?
No. Scotland operates a different possession framework. This ruling applies to England and Wales.
- Court of Appeal ruled 30 April 2026 — Harker v Hubert and Muca v El Amrani
- Missing pre-occupation gas safety certificate = permanent bar on Section 21
- Cannot be cured by later compliant certificates
- Applies to all ASTs granted after October 2015
- Supreme Court appeal granted — no ruling yet
- Several hundred cases reportedly stayed awaiting the outcome
- Relevant only to pre-1 May 2026 notices still in live proceedings
Related Articles
- Life after Section 21 — how possession works now
- Landlord compliance deadlines 2026–2030
- Rent increase tribunal: the evidence that actually wins
RentalReadyUK produces plain-English compliance guides for private landlords in England, written against primary sources including court judgments and legal commentary. This article is general information and not legal advice. If you have a live possession claim potentially affected by this ruling, take advice from a solicitor immediately.