GREEN SUSTAINABILITY CONSULTANTS LTD

What GREEN SUSTAINABILITY CONSULTANTS LTD does

GREEN SUSTAINABILITY CONSULTANTS LTD (GSC) is a privately held UK sustainability consultancy registered in England and Wales (company number 15026438) and headquartered at Level 18, 40 Bank Street, Canary Wharf, London. The firm delivers professional services across six pillars aligned with the UN Sustainable Development Goals and the Principles for Responsible Investment: Carbon Accounting, Sustainability and Climate Planning, Life Cycle Analysis, Energy and Green Technology Solutions, Net Zero Consulting and Implementation, and Responsible Consumption and Production. Its primary customer base is large UK companies, LLPs, and PLCs subject to SECR, ESOS, UK ETS, CCA, Modern Slavery Act, EPR, SDR, and FRCS obligations, alongside energy-intensive operators and financial institutions facing climate-related disclosure requirements.

GSC's service portfolio is supported by a proprietary online tool, the GSC Carbon Calculator, which ingests CSV or Excel activity data and produces consolidated Scope 1/2/3 emissions reports aligned with the GHG Protocol and DEFRA 2025 emission factors, including executive summaries, data quality indicators, and downloadable outputs. The firm has also listed an AI Solutions offering, though no specific AI methodology, model, or pipeline is documented. Services are delivered via direct engagement through the company's website, phone (+44 20 30597798), and email ([email protected]), with quote-based project pricing rather than published fee tiers. The team comprises five named consultants with credentials spanning carbon credit issuance, Oxford-based sustainability research, and government and healthcare sector work, with the most senior consultant citing 18 years of sustainability experience.

Name

GREEN SUSTAINABILITY CONSULTANTS LTD

Legal name

GSC Green Sustainability Consultants LTD

Website

https://gscsustainability.co.uk

Company type

Private

Founded year

2023

Operating status

Operating

Headcount range

1–10 employees

Short description

GSC Green Sustainability Consultants LTD is a privately held UK consultancy that helps large UK companies meet SECR, ESOS, UK ETS, and Net Zero obligations through carbon accounting, life cycle analysis, and sustainability planning, supported by its GSC Carbon Calculator tool.

Ownership category

akta.pro rank

Product category

Sustainability Consulting

NAICS

Environmental Consulting Services (541620), Management Consulting Services (54161)

SIC

Services-Engineering, Accounting, Research, Management (8700), Services-Management Services (8741)

akta.pro primary industry

Sustainability & ESG Consulting (BPAHACAK)

akta.pro secondary industries

Enterprise Carbon Accounting & GHG Inventory Platforms (EUABAEAA), Emissions Factors, LCA & Product Carbon Footprint (PCF) Platforms (EUABAEAD), Audit-Ready Controls, Assurance & Compliance Workflow Tools (CSRD/SEC/ISSB) (EUABAEAG)

Keywords

• Sustainability consulting
• Carbon accounting
• Emissions inventory
• Net zero strategy
• Environmental compliance

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Sustainability Consulting Services: Professional consulting services including carbon footprint analysis, emissions inventories, sustainability planning, life cycle analysis, energy technology solutions, and Net Zero consulting and implementation for businesses of all sizes.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

GSC Green Sustainability Consultants is a UK-based professional services firm delivering carbon accounting, emissions inventories, life cycle analysis, sustainability and climate planning, energy and green technology advisory, Net Zero consulting, and responsible consumption and production consulting. It also provides UK regulatory compliance services (SECR, ESOS, UK ETS, Modern Slavery Act, EPR, SDR, FRCS) and offers a proprietary online GSC Carbon Calculator that turns client CSV/Excel activity data into consolidated GHG-Protocol-aligned emissions reports.

Product overview

GSC Green Sustainability Consultants offers a comprehensive suite of sustainability consulting services organized around six pillars aligned with the UN Sustainable Development Goals (SDGs). The core portfolio includes Carbon Accounting tools and emissions inventories, Sustainability & Climate Planning, Life Cycle Analysis, Energy & Green Technology Solutions, Net Zero Consulting & Implementation, and Responsible Consumption & Production services. The company also provides a proprietary GSC Carbon Calculator tool for emissions reporting, AI Solutions for advanced sustainability analysis, and UK Environmental Compliance Services covering SECR, ESOS, and other UK regulations. Services are delivered by a team of sustainability professionals including carbon consultants, environmental consultants, and climate change specialists.

Differentiator

Problem solved

Functional benefit

Brands

• GSC Carbon Calculator: A carbon emissions calculator tool that processes CSV or Excel activity datasets to generate consolidated carbon emissions reports including executive summary, scope breakdown, key insights, and data quality indicators, aligned with GHG Protocol and DEFRA 2025 methodologies.

Products and services

• Carbon Accounting Carbon accounting consulting service that builds emissions inventories, delivers third-party verifications, and estimates carbon emissions across various sector-specific activities for organisations preparing for sustainability and compliance reporting.
• Sustainability & Climate Planning Consulting service that partners with organisations of all sizes to analyse their current sustainability landscape, identify emissions and resource-conservation goals, and develop customised climate action plans.
• Life Cycle Analysis Comprehensive life cycle analysis of products to assess full environmental impacts, enabling clients to make informed decisions that prioritise environmental stewardship across the product life cycle.
• Energy & Green Technology Solutions Advisory service covering energy matters, including testimony on energy rate structures, zero-net-energy micro-housing programmes, and the creation and management of public/private partnership projects for energy efficiency.
• Net Zero Consulting & Implementation Consulting service that helps businesses set and achieve Net Zero status within their chosen timeline, including Net Zero target setting and implementation strategies for both large businesses and those at the start of their sustainability journey.
• Responsible Consumption & Production Consulting service that helps businesses optimise resources, reduce waste, and enhance supply chain efficiency to improve financial performance and reputation as socially responsible companies.
• UK Environmental Compliance Services Compliance consulting service covering UK environmental and sustainability regulations including SECR, ESOS, the Modern Slavery Act, UK ETS, SDR, EPR, and FRCS, helping businesses meet statutory reporting and audit obligations.
• AI Solutions AI-powered sustainability solutions offered as part of GSC's service portfolio, providing innovative carbon footprint and environmental analysis capabilities to clients seeking advanced sustainability analysis.
• GSC Carbon Calculator Standalone online tool that accepts CSV or Excel activity datasets and generates consolidated carbon emissions reports including executive summary, scope breakdown, key insights, data quality indicators, and downloadable output aligned with the GHG Protocol and DEFRA 2025 emission factors.

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Scale indicators3 records

Recent moves5 records

Expansion highlights4 records

Direct peers

• EcoAct: Europe-based sustainability consultancy offering carbon footprinting, climate strategy, and net-zero advisory. Recently acquired by Accenture, but historically a direct competitor to GSC in carbon accounting and Net Zero consulting for UK/EU corporates.
• Carbon Trust: UK-headquartered sustainability and carbon advisory firm helping businesses measure, manage, and reduce carbon emissions. Directly competes with GSC across carbon accounting, compliance (SECR, ESOS), and Net Zero advisory to UK corporates.
• South Pole: Global climate solutions provider offering carbon advisory, emissions calculations, and sustainability strategy. Competes with GSC in carbon footprinting, life cycle analysis, and Net Zero strategy across multi-sector clients.
• Avieco: UK-based sustainability consultancy providing carbon accounting, LCA, and ESG reporting services. Direct competitor to GSC in UK mid-market and enterprise sustainability advisory.
• Carbon Intelligence: UK-based sustainability consultancy focused on carbon accounting, TCFD reporting, and Net Zero strategy for large enterprises. Directly competes with GSC for UK SECR/ESOS compliance engagements.

Emerging players

• Persefoni: Cloud-based climate management and accounting platform for enterprises and financial institutions. Competes with GSC's carbon calculator and ESG reporting offerings, particularly for TFCD/SECR-aligned clients.
• Watershed: Enterprise carbon accounting platform that automates GHG inventory and climate disclosures. Represents the software-enabled competitive threat to GSC's manual carbon accounting service line.
• Sweep: Sustainability management platform with carbon accounting and ESG reporting capabilities. Competes with GSC's calculator and advisory services for mid-market and enterprise clients.

Broad incumbents

• Deloitte Sustainability & Climate: Big Four advisory practice offering sustainability strategy, non-financial assurance, and climate risk services. Competes with GSC for large UK enterprise ESG/SECR compliance and assurance work.
• Accenture Sustainability Services: Global consultancy with a large sustainability services practice (including EcoAct). Competes with GSC on enterprise-scale Net Zero, ESG reporting, and climate strategy mandates across UK corporates.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xtwitter.com/GSCSustainable
• Facebookfacebook.com/GSCgreensustainabilityconsultants
• LinkedInlinkedin.com/company/gsc-green-sustainability-consultants
• Instagraminstagram.com/gscgreensustainability

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about GREEN SUSTAINABILITY CONSULTANTS LTD