Gas Safety Certificates and Section 21: The Supreme Court Appeal

A missing gas safety record from the start of a tenancy may put a landlord’s Section 21 possession claim at risk, even if annual certificates were later provided. That is the effect of the Court of Appeal’s decision in Muca v El Amrani; Harker v Hubert [2026] EWCA Civ 515. On 6 October 2026, the Supreme Court granted permission to appeal.

The appeal has not yet been decided. As at 16 October 2026, the Court of Appeal ruling remains the current authority, while landlords and tenants await the Supreme Court’s consideration. This update explains what the ruling decided, what the appeal could mean for legacy possession claims, and how landlords can reduce the risk of similar compliance disputes.

What did the Court of Appeal decide?

In Muca v El Amrani, the landlord had not provided the tenant with the relevant gas safety record before she first occupied the property. The tenancy began in 2014, followed by later tenancies. The landlord arranged annual checks and provided subsequent certificates, but the Court of Appeal held that those later records did not replace the missing pre-occupation record.

The Court considered the interaction between section 21A of the Housing Act 1988, the Gas Safety (Installation and Use) Regulations 1998 and the prescribed requirements for Section 21 notices. It concluded that, on the facts before it, the landlords’ failure to provide the required pre-occupation record meant their Section 21 notices were invalid.

The decision also addressed tenants who remain in occupation under successive tenancies. The Court considered a tenant who had stayed in the property as an “existing tenant” for the annual-record requirement, rather than becoming a “new tenant” each time a further tenancy began. A new tenancy did not, by itself, reset the relevant history.

The full judgment is available here: Muca v El Amrani; Harker v Hubert [2026] EWCA Civ 515.

Why later certificates may not be enough

Landlords may assume that supplying the latest gas safety certificate resolves any earlier paperwork gap. The Court of Appeal’s decision shows why that assumption could be risky: a certificate for a later annual check is not the same record as the one relating to the check before the tenant first occupied.

There is an important distinction between a record that was provided late and a pre-occupation record that was never provided. In Trecarrell House Ltd v Rouncefield [2020] EWCA Civ 760, the Court of Appeal considered late provision of a gas safety record. Muca concerns whether later annual records can stand in for the distinct pre-occupation record. It does not mean that every late-served certificate automatically invalidates a notice. The facts, the records that exist and when they were served all matter.

The Court of Appeal recognised that its interpretation could have severe consequences for landlords, particularly where a tenancy began many years ago and historical records are difficult to locate. But it considered that the statutory requirements, as it interpreted them, led to that result.

What does the Supreme Court appeal mean?

The Supreme Court’s case page identifies the issue as whether the landlord was prevented from serving a Section 21 notice after failing to provide the tenant with the pre-occupation gas safety certificate. Permission to appeal was granted on 6 October 2026 in Muca v El Amrani, UKSC/2026/0070. The case is linked with Harker v Hubert, UKSC/2026/0067.

Permission to appeal is not a final judgment and does not overturn the Court of Appeal decision. Until the Supreme Court rules, landlords should treat Muca as the current authority when assessing an affected Section 21 claim. The Supreme Court may uphold, change or clarify the Court of Appeal’s reasoning; the outcome should not be assumed in advance.

The appeal is especially relevant to surviving or historic proceedings. Section 21 notices could no longer be served from 1 May 2026, and the final deadline to begin court proceedings using an eligible pre-reform notice was 31 July 2026. Claims started by the applicable deadline may continue, but the Supreme Court appeal does not automatically revive a notice or claim that missed the transition deadline. For the official transitional rules, see GOV.UK guidance on possession notices served before 1 May 2026.

For more on how the end of Section 21 changed possession proceedings, see our guides to the Section 8 possession surge and the post-Section 21 possession regime. Our article on Ground 4A and student lets covers a separate possession route for qualifying student HMOs.

A pre-tenancy gas safety checklist

A consistent process helps protect tenants and gives landlords a clearer record of compliance. Before a new tenant moves in, landlords should:

1. Arrange the required check. Make sure each relevant gas appliance and flue has been checked in line with the Gas Safety Regulations. In general, checks must take place at intervals of no more than 12 months.
2. Provide the relevant record before occupation. Give the incoming tenant a copy of the last record for each relevant appliance or flue before they occupy. Keep evidence of when and how it was provided.
3. Provide later records on time. The regulations generally require a copy of a new record to be given to an existing tenant within 28 days of the check.
4. Keep records and proof of service. The regulations specify how long a gas safety record must be retained: generally until two further checks have been completed, or, if the appliance or flue is removed, for two years from the last check. Landlords may wish to keep copies and proof of service for longer, especially where a possession dispute is possible. See the HSE’s guidance on gas safety records.
5. Check the complete possession history. Before relying on any possession notice, review the tenancy dates, relevant gas safety records and evidence they were served. Do not assume that a more recent certificate resolves a gap in the earlier history.

This is a practical checklist, not a substitute for advice on a particular property or tenancy. The applicable requirements can depend on the tenancy history and the records available.

What should landlords with older tenancies do now?

If a Section 21 claim was issued within the relevant transition period and is still ongoing, gather the complete tenancy and gas safety file. Identify when the tenant first occupied, which record related to the check before that occupation, and whether and when it was provided. Preserve correspondence, certificates, agent records and any evidence of service.

If the original record is missing, or there is uncertainty about whether it was served, obtain legal advice before taking a position in the proceedings. The Court of Appeal’s ruling may affect the claim, but the answer will depend on the specific facts and documents. The Supreme Court appeal may clarify the law; its result should not be treated as settled before judgment.

For new possession decisions after the end of Section 21, landlords generally need to consider the appropriate statutory ground and comply with the current notice procedure. Our Landlord & Tenant team advises landlords and tenants on possession disputes and housing matters.

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If you need advice about a gas safety record, a historic Section 21 claim or another landlord and tenant issue, contact Tyndel Solicitors or call 0208 154 3131 to discuss your situation.

This article provides general information for England and Wales and is not legal advice. The law may change following the Supreme Court appeal. Seek advice on your specific circumstances.