Top suppliers
Top suppliers to arc21
Top-five suppliers hold 97% of contract value — a concentrated market.
Procurement categories
What arc21 buys
Common Procurement Vocabulary (CPV) breakdown of contracts awarded over the reporting period.
90Recent contracts
Latest arc21 contracts awarded
The most recently published award notices on Find a Tender and Contracts Finder.
Provision of services for the receipt, storage and transfer of mixed dry recyclable material
NATURAL WORLD PRODUCTS LIMITED · 2026-08-27
£750K
The provision of services for the receipt, storage, bulking and transfer of Municipal Waste
NATURAL WORLD PRODUCTS LTD · 2025-06-26
£10.0M
Call Off Contract E
RiverRidge Recycling (Portadown) Ltd · 2025-01-29
Call Off Contract F
Regen Waste Ltd · 2024-12-18
Call Off Contract G
Regen Waste Ltd · 2024-12-18
Call Off Contract D
Regen Waste Ltd · 2024-11-27
Call Off Contract C
RiverRidge Recycling (Portadown) Ltd · 2024-10-03
The provision of services concerning street sweeping waste arising from Antrim and Newtownabbey Borough Council, Lisburn and Castlereagh City Council and Mid and East Antrim Borough Council
Irish Waste Services Ltd · 2024-08-18
£3.4M
The provision of services concerning street sweeping waste arising from Belfast City Council
Irish Waste Services Ltd · 2024-08-18
£2.0M
Contract
NATURAL WORLD PRODUCTS LTD · 2024-03-28
£1.7M
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Open arc21 tenders
Tenders currently inviting bids. SMEs can respond via the official tender portal.
Change to Period of Validity of existing Dynamic Purchasing System (DPS) for The Supply of Services Relating to the Treatment and Energy Recovery/Disposal of Residual Waste Arisings - Extension to 23 February 2029
Deadline: 2029-02-23
£970.0M
The Supply of Services Relating to the Treatment and Energy Recovery/Disposal of Residual Waste Arisings
Deadline: 2032-09-03
£970.0M
Market analysis
Bidding into arc21 — what to expect
Supplier concentration and timing patterns that shape SME bid strategy.
100%
Awards to SMEs
97%
Top-5 supplier share
0%
Framework call-offs
—
Awards to social enterprises
Around 100% of arc21’s classified awards go to small and medium-sized enterprises.
Frequently asked
Common questions about selling to arc21
How much does arc21 spend on procurement?
arc21 awarded 14 contracts totalling £24.1M between 2023-09-01 and 2026-09-01, working with 8 unique suppliers. Average contract value is £2.7M.
Who are arc21's top suppliers?
The largest suppliers to arc21 by total award value are NATURAL WORLD PRODUCTS LTD, Irish Waste Services Ltd, Enva Northern Ireland Ltd. The top five suppliers together hold 97% of contract value.
What does arc21 buy from suppliers?
arc21's procurement is concentrated in sewage, refuse, cleaning and environmental services, alongside specialist categories. See the full CPV breakdown below.
How can my business bid for arc21 contracts?
arc21 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.
Continue reading
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 arc21'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 2026-09-01
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.