COMPLIANCE · UNITED KINGDOM
EU compliance ≠
UK compliance
Since Brexit, Britain runs a parallel carbon regime — its own trading scheme, its own
border charge, its own reporting standards. Assume the EU’s rules apply here and you’ll
be wrong on the detail that matters.
OVERVIEW
Same destination, a different road
The UK shares the net-zero goal, but it has built its own machinery to get there — a separate emissions market, a border charge that works as a tax rather than a certificate, reporting standards drawn from the global ISSB baseline rather than the EU’s.
The instruments, thresholds and timelines are Britain’s own. A compliance process built for the EU will not clear you here — and if you operate on both sides, you carry both. There is one further difference from most markets: in the UK, what carries the obligation changes from regime to regime. Some catch the company, some the installation, one catches the building. A single group can be caught three different ways at once.
5 REGIMES
In force now
Carrying legal weight today for covered plants.
UK ETS
Emissions trading · installation level · since 2021
Britain's own cap-and-trade market, pricing CO₂ from power, heavy industry and aviation — separate from the EU ETS since 2021.
Britain's own cap-and-trade market, pricing CO₂ from power, heavy industry and aviation — separate from the EU ETS since 2021.
WHO
Operators of installations in power, energy-intensive industry and aviation above the scheme’s thresholds. The obligation sits on the permitted installation, not the parent company.
WHAT TO DO
Monitor to an approved plan, report annually, have the report verified, and surrender allowances against verified emissions.
NOTE
Linkage with the EU ETS is under discussion but not in place. Until it is, the two prices move independently — and the gap feeds into CBAM costs at the EU border.
Where it goes wrong. The ETS number and the SECR number describe the same sites and are produced by different people from different sources — permit-level metering on one side, supplier invoices booked by finance on the other. They rarely agree. Both are published, and the discrepancy is visible to anyone who reads both.
SECR
Streamlined Energy & Carbon Reporting · company level
Large UK companies must report energy use and carbon emissions inside their annual reports — the UK's baseline mandatory carbon disclosure.
Large UK companies must report energy use and carbon emissions inside their annual reports — the UK's baseline mandatory carbon disclosure.
WHO
Large UK companies and LLPs meeting the size thresholds, plus quoted companies.
WHAT
Energy consumption, associated emissions and at least one intensity ratio, disclosed annually — a data obligation before it is a reporting one.
Where it goes wrong. SECR is usually assembled by finance at year end from whatever invoices can be found, then dropped into the accounts. It is a published, director-signed number built on a data trail nobody has tested. The intensity ratio is where it shows: divide the disclosed emissions by the disclosed output and the figure often doesn’t come back.
ESOS
Energy Savings Opportunity Scheme · four-yearly · company level
Mandatory energy audits every four years for large undertakings — identifying where energy and cost can be cut.
Mandatory energy audits every four years for large undertakings — identifying where energy and cost can be cut.
WHO
Large UK undertakings meeting the employee or turnover thresholds, on a four-yearly compliance cycle.
WHAT TO DO
Audit total energy use across buildings, transport and processes, identify cost-effective savings, and have the assessment signed off by a qualified lead assessor. Later phases add an action plan and periodic progress reporting.
Where it goes wrong. ESOS gets bought as a certificate rather than an audit — the cheapest assessor, the minimum sampling, a report that lists measures nobody has costed. It clears the regulator and produces nothing usable. The same site visit, done properly, is the measurement base for SECR and for any carbon claim you make afterwards.
MEES
Minimum Energy Efficiency Standards · building level
Commercial property must meet a minimum energy-performance rating to be lawfully let — with the threshold tightening over time.
Commercial property must meet a minimum energy-performance rating to be lawfully let — with the threshold tightening over time.
WHO
Landlords of commercial real estate in England and Wales. The minimum EPC rating determines whether a property can lawfully be let.
DIRECTION
The required standard ratchets up over time — property that complies today can fall below the line as the threshold rises. Proposed future tightenings have been repeatedly consulted on and repeatedly moved; treat announced dates as direction, not as law.
Where it goes wrong. The EPC on file is often years old and reflects a building that has since been refurbished, re-tenanted or re-plant-roomed. Owners discover the real rating at the point of letting, which is the one moment there is no time to fix it.
PPN 006 — Carbon Reduction Plans
Public procurement · the demand channel
Bidders for major central government contracts must publish a Carbon Reduction Plan. The state using its purchasing power to push carbon data down supply chains.
Bidders for major central government contracts must publish a Carbon Reduction Plan. The state using its purchasing power to push carbon data down supply chains.
WHO
Suppliers bidding for in-scope central government contracts above the threshold — and, in practice, their subcontractors, who get asked for the same data.
WHAT
A published plan covering Scope 1, Scope 2 and defined Scope 3 categories, with a net-zero commitment and a named baseline.
Where it goes wrong. A Carbon Reduction Plan written for one bid gets reused for three years. It is a public document with a baseline year in it, so the numbers are checkable — and the moment your reported emissions elsewhere disagree with it, you have created the evidence against your own bid.
1 REGIMES
In the window
Where the decisions being made now determine tomorrow’s liability.
UK CBAM
Carbon border charge · from January 2027
A charge on the embedded emissions of imported carbon-intensive goods — the UK's answer to carbon leakage, built as a tax rather than the EU's certificate market.
A charge on the embedded emissions of imported carbon-intensive goods — the UK's answer to carbon leakage, built as a tax rather than the EU's certificate market.
WHO
UK importers of aluminium, cement, fertiliser, hydrogen and iron & steel. Administered by HMRC — you register, self-assess and pay.
DIFFERENT
Unlike the EU’s, it excludes electricity and uses a single global default value. It is a tax, not a certificate scheme.
BITH SIDES?
EU CBAM is already live and works completely differently — a certificate scheme priced off the EU ETS. You’ll carry both, and you cannot run one process for the two.
There is no transitional period. The EU gave importers two years of reporting-only practice before money changed hands. The UK does not. It starts in full, and the data you need sits inside your overseas supplier’s plant — which means the conversation with that supplier has to happen now, not in December 2026.
1 REGIMES
Upcoming
Direction is set. The lead time is the preparation window.
UK SRS — S1 & S2
Sustainability Reporting Standards
The UK's own sustainability reporting standards, drawn from the global ISSB baseline — investor-focused and single-materiality.
The UK's own sustainability reporting standards, drawn from the global ISSB baseline — investor-focused and single-materiality.
STATUS
Standards finalised in 2026. Mandatory application is being set separately — the FCA for listed issuers, government for large companies. Until those decisions land, the standard exists but the obligation does not.
CONTRAST
Where the EU keeps double materiality, the UK follows the ISSB’s single, investor-focused lens. A group reporting in both satisfies two logics from one dataset.
Green Steel Taxonomy
A definition of "green steel" by CO₂ intensity per tonne of crude steel, supporting the goal of cutting intensity toward ~2.2 tCO₂/tcs by 2030.
WHY IT MATTERS
It sets the standard your product is measured against for green-steel claims, procurement preference and premium positioning — separate from CCTS, but built on the same emissions measurement.
Also on our radar
UK–EU ETS linkage remains under discussion. If the two schemes link, the carbon-price gap that currently drives EU CBAM exposure for UK exporters narrows or closes — which would change the economics of both border charges. Nothing is in place. We track it, and it is the single development most likely to move this page.
A separate stack, one measurement
UK ETS, SECR, ESOS, MEES, PPN 006 and SRS are distinct obligations with distinct forms — but each rests on the same foundation: how well you measure the energy and carbon in what you make and where you make it.
Build that measurement once, to a standard that withstands scrutiny, and it feeds every one of them — and the EU’s regime too, when you trade across the Channel. The rulebooks differ; the tonne of carbon you have to prove does not.
HOW WE WORK ON THIS
We build the record,
then file from it
Ventrovia works the measurement layer first, because everything above it —
the filing, the verification, the trade — is only as good as the number underneath.
Measure it properly
Site-level energy and carbon audit across buildings, processes and transport — the same evidence base ESOS asks for, built so it can also carry SECR and any carbon claim you make afterwards.
File from one source
SECR disclosure, ETS reporting, Carbon Reduction Plan and CBAM figures drawn from the same record — so your published numbers agree with each other.
Move the number
Which measures actually pay back, what a tonne of abatement costs across your estate, and where an EPC or intensity ratio can realistically be shifted.
CHECK YOUR STATUS
Which UK regimes catch you?
Answer a few questions on size, sites, property and what you import — and see which obligations you carry, and at which level.
GO DEEPER
European Union
The EU runs a separate regime — a different CBAM, different reporting, double materiality. See what changes across the Channel.
