What ESG services does RSustain UK provide?

RSustain UK provides ESG strategy advisory, materiality assessments, ESG system design, regulatory alignment (UK SDR, CSRD, ISSB), and implementation support. We focus on building audit-ready ESG frameworks without providing statutory assurance.

Does RSustain UK provide Net Zero or carbon footprint services?

Yes. RSustain UK supports organisations with Scope 1, 2, and 3 carbon footprinting, Science Based Targets (SBTi) alignment, and Net Zero transition planning. All services are advisory and system-design focused and do not include third-party verification or validation.

Is RSustain UK an assurance or verification body?

No. RSustain UK does not provide statutory assurance, verification, or validation services. We support organisations in achieving assurance readiness by designing robust ESG, carbon, and compliance systems aligned with regulatory expectations.

Which regulations and frameworks does RSustain UK work with?

RSustain UK works with global and UK frameworks including CSRD, UK SDR, SECR, ISSB (IFRS S1/S2), GHG Protocol, SBTi, ISO 14001, ISO 14064-1, and Environment Act 2021 requirements such as Biodiversity Net Gain.

Do you support ESG software or digital compliance tools?

Yes. RSustain UK develops and deploys ESG and environmental compliance tools, including digital legal registers, carbon data platforms, and ESG diagnostics to support ongoing compliance and reporting.

What training and certification programmes are offered through RSustain Academy?

RSustain Academy offers practitioner-led ESG training programmes, including ESG Foundation and ESG Masterclass courses, as well as ISEP-accredited certifications delivered in collaboration with an official ISEP training partner.

Who are RSustain UK’s services designed for?

RSustain UK works with corporates, infrastructure developers, investors, and organisations seeking regulatory-aligned ESG, Net Zero, and environmental compliance solutions across the UK and Europe.

ISSB is the International Sustainability Standards Board. It sets global baseline sustainability disclosure standards intended to provide investors with decision-useful, comparable information.

IFRS S1 is the ISSB standard for general sustainability-related financial disclosures. It requires organisations to disclose material sustainability-related risks and opportunities that could reasonably affect enterprise value.

IFRS S2 is the ISSB standard for climate-related disclosures. It focuses on governance, strategy, risk management, and metrics/targets for climate risks and opportunities, building on the structure familiar from TCFD.

How do ISSB standards relate to UK SDR?

UK SDR is expected to align with global baseline standards, including ISSB’s IFRS S1 and IFRS S2, to improve consistency and comparability of disclosures for UK capital markets.

Do we need assurance for ISSB-aligned reporting?

Assurance expectations vary by regulator and stakeholder. Many organisations aim for assurance-readiness by strengthening data controls, documentation, governance and evidence trails behind disclosures.

What is ISSB / IFRS S1 & S2?

Investor-grade disclosures • UK-ready implementation

The ISSB standards—IFRS S1 (general sustainability-related disclosures) and IFRS S2 (climate-related disclosures)—define a global baseline for reporting material sustainability and climate information that can affect enterprise value. They are designed to be consistent, comparable, and decision-useful for investors.

S1 & S2 in 90 seconds Implementation checklist Request readiness review

Related: UK SDR • ESG Strategy • Net Zero & Carbon

IFRS S1 & IFRS S2 in 90 seconds

ISSB uses a familiar disclosure structure (governance, strategy, risk management, metrics & targets). The key difference is the enterprise value lens: disclose sustainability and climate issues that could reasonably affect financial performance over time.

IFRS S1

General sustainability-related disclosures: material risks/opportunities, how they’re governed, managed, and measured.

IFRS S2

Climate disclosures: transition & physical risks, resilience, scenario considerations, emissions metrics and targets.

Why it matters

Investors want comparable, decision-useful sustainability information. ISSB reduces fragmentation across reporting regimes.

Prepare fast

Treat it as a controls + evidence programme: data ownership, calculation notes, controls, approvals, evidence pack.

What “ISSB-ready” looks like in practice

Organisations that succeed typically build four things: disclosure architecture, governance, data controls, and an evidence trail.

Area	Minimum standard	RSustain UK outputs
Governance	Accountability, escalation paths, board oversight, disclosure approvals.	Governance map, RACI, approval workflow, policy templates.
Strategy linkage	Material issues linked to business model, risks, financial planning.	Materiality summary, risk mapping, KPI/target logic, narrative library.
Metrics & targets	Defined metrics, boundaries, calculation methods, target definitions.	Metric dictionary, calculation notes, target protocol, disclosures index.
Data controls & evidence	Source systems, data owners, validation checks, version control.	Controls library, evidence pack, change log, audit-traceability design.

Note: RSustain UK provides advisory & implementation support and does not provide statutory or third-party assurance.

Implementation checklist (fast and safe)

Use this to move from “policy intent” to an operational disclosure system.

1) Scope & materiality

Define material topics (enterprise value lens), boundaries, and reporting perimeter.

2) Disclosure architecture

Create disclosure index + crosswalks; define required narratives and metrics.

3) Data ownership & controls

Assign owners, define data sources, add validation checks and change control.

4) Evidence pack

Build calculation notes, evidence files, approvals, and traceability.

Pro tip: If you want ISSB-ready Net Zero disclosures, start with a defensible Scope 1–3 baseline and method notes. See Net Zero & Carbon Management.

ISSB / IFRS S1 & S2 FAQs

Are IFRS S1/S2 only for listed companies?

They’re designed for capital markets, but private companies often adopt them to satisfy lenders, investors, and customers.

Is IFRS S2 basically TCFD?

IFRS S2 uses a similar structure (governance, strategy, risk management, metrics/targets). The focus is investor-grade, enterprise value relevant climate information with strong controls and comparability.

What is the biggest failure point?

Weak data controls and missing evidence trails. The fix is a data dictionary, calculation notes, owner sign-offs, and an evidence pack aligned to disclosures.

Request ISSB readiness review Read UK SDR guide

Make your disclosures investor-grade

Build ISSB-aligned disclosure architecture, controls, and evidence packs—so sustainability reporting stands up to scrutiny.

Book a call with RSustain UK

Advisory & implementation support only. No statutory or third-party assurance.