About RSustain

Audit-Ready ESG Advisory Built on 26+ Years of Practice

We help organisations meet sustainability reporting, decarbonisation and due diligence obligations — with outputs that survive regulatory scrutiny and third-party assurance.

Advisory services only. RSustain does not provide statutory assurance or verification.

Book a Free Scoping Call Our Capabilities
26+
Years of ESG Practice
6
Countries Served
27+
Client Engagements
80+
Courses on Academy
Our Purpose

Make Sustainability Measurable, Defensible and Useful

RSustain exists to close the gap between sustainability ambition and regulatory reality. We translate frameworks — CSRD, ISSB, GHG Protocol, SBTi, TNFD — into operational programmes with quantified baselines, audit-grade documentation and board-ready reporting.

Every engagement is led by senior practitioners with direct experience of the standards they advise on. No juniors, no templates, no greenwash.

Why RSustain

What Makes Us Different

Practitioner-Led

Every engagement is delivered by CEnv-qualified, FISEP-credentialed senior advisors — not delegated to junior analysts.

Regulatory-Current

Advice reflects the latest regulatory position — Omnibus I, UK SRS, ISSB S1/S2, SBTi FLAG v2 — not outdated guidance.

Framework-Agnostic

We work across GRI, ISSB, CSRD/ESRS, SBTi, TNFD and sector-specific standards — selecting what fits your obligations.

Audit-Ready Output

Deliverables are structured for third-party assurance — with data trails, methodology notes and evidence packs as standard.

Credentials

Professional Standing

CEnv

Chartered Environmentalist — awarded by the Society for the Environment via IEMA

FISEP

Fellow of the Institute of Sustainability & Environmental Professionals (formerly IEMA)

UNFCCC Expert Reviewer

Rostered expert reviewer for national GHG inventories under the UN Framework Convention

AA1000 Licensed

AA1000 assurance licence held by RSPL India — stakeholder engagement and sustainability reporting

Methodology

How We Work

1

Diagnose

Regulatory gap analysis, materiality screen and baseline data audit against applicable frameworks.

2

Design

Roadmap, KPI architecture, data collection protocols and governance structure tailored to your obligations.

3

Deliver

GHG inventories, transition plans, sustainability reports and disclosures — computed, not estimated.

4

Defend

Pre-assurance review, evidence packs and audit-trail documentation so outputs withstand scrutiny.

Global Reach

Group Structure

HQ

RSustain UK (RSL)

Resilient Sustainance Limited. UK-incorporated advisory practice covering GHG accounting, SBTi target-setting, CSRD/ESRS readiness, UK SRS compliance and transition planning.

rsustain.co.uk →

RSustain India (RSPL)

Resilient Sustainance Private Limited. BRSR compliance, EIA, AA1000 licensed assurance, and 50+ ESG digital tools for the Indian market.

india.rsustain.com →

GSustain Qatar

GAB-accredited sustainability training and advisory from Qatar Free Zone. ISEP-accredited, delivering CEM, FCEM and sector-specific ESG programmes across the Gulf.

gsustain.org →
Standards & Frameworks

Frameworks We Work With

GHG Protocol
Scope 1-3 accounting
GRI Standards
Impact reporting
ISSB S1 / S2
Financial materiality
CSRD / ESRS
EU double materiality
SBTi
Science-based targets
TNFD / LEAP
Nature-related disclosure
UK SRS
UK sustainability reporting
SASB
Industry-specific metrics
ISO 14064
GHG verification standard
AA1000
Stakeholder engagement
TCFD / TPT
Climate & transition plans
CDP
Environmental disclosure
Social Proof Selected Clients & Engagements View our track record across sectors and geographies →
Common Questions

Frequently Asked Questions

Who is RSustain?
RSustain is a technical ESG advisory practice founded in 2000, operating from the UK (Resilient Sustainance Limited), India (RSPL) and Qatar (GSustain). We provide GHG accounting, sustainability reporting, decarbonisation strategy and regulatory compliance advisory. We do not provide statutory assurance or verification.
What sectors do you serve?
We work across manufacturing, financial services, energy, real estate, infrastructure, mining, agriculture and professional services. Sector-specific experience includes CBAM-affected exporters, SFDR-obligated fund managers, and BRSR-reporting listed companies in India.
Where do you operate?
RSustain serves clients in the UK, EU, India, Qatar, Australia and New Zealand. UK and EU advisory is led from RSL (UK). Indian advisory and ESG tools are delivered through RSPL. Gulf training and advisory is delivered through GSustain (Qatar Free Zone).
Do you provide assurance?
RSustain does not provide statutory assurance or verification. RSPL India holds an AA1000 licence for stakeholder engagement assurance. For CSRD, UK SRS and other reporting frameworks, we prepare audit-ready documentation and support the assurance process by working alongside your chosen assurance provider.
What frameworks do you work with?
We advise across GHG Protocol (Scope 1-3), GRI, ISSB S1/S2, CSRD/ESRS, SBTi, TNFD/LEAP, UK SRS, SASB, ISO 14064, AA1000, TCFD/TPT and CDP. Framework selection depends on your regulatory obligations, sector and reporting geography.
How do I get started?
Book a free scoping call. We will identify which regulatory obligations apply to your organisation, assess your current data maturity, and propose a phased engagement with fixed pricing. Typical scoping calls are 30 minutes with a written summary within 48 hours.
Ready to Start?

Book a Free Scoping Call

30 minutes. No obligation. We will identify your regulatory obligations, assess your data readiness and outline next steps — with a written summary within 48 hours.

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