Top suppliers
Top suppliers to Southern Gas Networks (SGN)
Top-five suppliers hold 100% of contract value — a concentrated market.
Procurement categories
What Southern Gas Networks (SGN) buys
Common Procurement Vocabulary (CPV) breakdown of contracts awarded over the reporting period.
4544Recent contracts
Latest Southern Gas Networks (SGN) contracts awarded
The most recently published award notices on Find a Tender and Contracts Finder.
Oxford & Aldershot
I&G Contractors Ltd · 2026-03-31
£266.1M
Horsham & Ashford
I&G Contractors Ltd · 2026-03-31
£238.1M
Epsom, Orpington & Godstone
WCB Utilities Limited · 2026-03-31
£273.8M
FW Goods - Gas Leakage and Dead Insertion - Multi 0826
Synthotech Limited · 2024-08-11
Southern Gas Networks - London & South-East Regions
Forefront Utilities Limited · 2023-07-04
Southern Gas Networks - North & South Regions
I & G Contractors Limited · 2023-07-04
Provision of Aerial Surveillance Services
Heli Air Ltd · 2023-06-19
FW Services - SGN Company Cars, Fleet Management, Maintenance & Repair of Commercial Vehicles and Daily Rentals – Multi 0929
Zenith Vehicle Contracts Limited · 2023-06-01
FW Services - SGN Company Cars, Fleet Management, Maintenance & Repair of Commercial Vehicles and Daily Rentals – Multi 0929
Rivus Fleet Solutions Limited · 2023-03-15
pre-FEED route corridor assessment for LTS high pressure hydrogen pipelines - Lot 3 South LDZ Pathway Southern
Wood Group Limited · 2023-02-28
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Market analysis
Bidding into Southern Gas Networks (SGN) — what to expect
Supplier concentration and timing patterns that shape SME bid strategy.
7%
Awards to SMEs
100%
Top-5 supplier share
0%
Framework call-offs
—
Awards to social enterprises
Around 7% of Southern Gas Networks (SGN)’s classified awards go to small and medium-sized enterprises.
Frequently asked
Common questions about selling to Southern Gas Networks (SGN)
How much does Southern Gas Networks (SGN) spend on procurement?
Southern Gas Networks (SGN) awarded 4 contracts totalling £778.0M between 2023-10-12 and 2026-10-12, working with 3 unique suppliers. Average contract value is £259.3M.
Who are Southern Gas Networks (SGN)'s top suppliers?
The largest suppliers to Southern Gas Networks (SGN) by total award value are I&G Contractors Ltd, WCB Utilities Limited, Synthotech Limited. The top five suppliers together hold 100% of contract value.
What does Southern Gas Networks (SGN) buy from suppliers?
Southern Gas Networks (SGN)'s procurement is concentrated in construction work, construction structures and materials; auxiliary products to construction (except electric apparatus), alongside specialist categories. See the full CPV breakdown below.
How can my business bid for Southern Gas Networks (SGN) contracts?
Southern Gas Networks (SGN) publishes open tenders on Find a Tender and Contracts Finder. ENKII matches your business against live tenders, identifies certifications you'll need, and surfaces frameworks worth applying to. Free Readiness Score in 3 minutes.
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Related ENKII resources
GUIDE
PQQ & Selection Questionnaire — Procurement Act 2023
How UK central-government departments evaluate suppliers at the pre-qualification stage.
GUIDE
Cyber Essentials — for government contracts
Most central-government contracts handling personal data require this certification.
SECTOR
UK Government IT Services
G-Cloud, DOS, Crown Commercial frameworks. Software + consultancy is Southern Gas Networks (SGN)'s largest spend area.
INDEX
All UK public-sector buyers
Browse procurement profiles for every UK government department and major buyer.
Sources & methodology
How this profile is compiled
Analysed by ENKII · Updated 2026-10-12
This profile aggregates public-record procurement data published by the UK Government under the Open Government Licence v3.0. ENKII fetches, deduplicates, and aggregates source records; we don't edit the underlying facts.
Source portals
- · Find a Tender (find-tender.service.gov.uk)
- · Contracts Finder
Source records remain subject to Open Government Licence v3.0 attribution. ENKII doesn't warrant accuracy beyond the source portals' own publication.