UK public sector procurement consultancy
The inside track on £400 billion of public contracts.
We take technology and services companies, UK and international, into the UK public sector with the buyer's playbook in hand. And we run procurement inside contracting authorities, so every pound they spend is defensible. Same consultants, both sides of the table. That is why it works.
Source: National Procurement Policy Statement, written ministerial statement to Parliament, 13 February 2025.
Private companies
Win the contracts you should be winning.
For technology, digital, data and professional services companies, UK based and international, that want a defined target, a route in and the positioning to win, rather than years of learning the market the hard way.
- UK market entry for international companies
- Strategic Public Sector Growth
- Framework onboarding, including G-Cloud 15
- Bid leadership and tender writing
Contracting authorities
Compliance you can evidence. Savings you can bank.
For local authorities, housing associations, NHS bodies, police, universities and every organisation the Procurement Act 2023 reaches, and for the leadership teams answerable for how public money is spent.
- Procurement Act 2023 Compliance Reviews
- Procurement transformation and advisory
- Training
- The Procurement Act 2023 for authorities
The market
Source: National Procurement Policy Statement, written ministerial statement to Parliament, 13 February 2025.
£400 billion of public money is spent through public procurement every year. For private companies, it is the largest customer in the country. For contracting authorities, every pound of it is now visible, reportable and open to challenge. Nexus works where the two meet.
100%
of the G-Cloud 15 applications we submitted were accepted, for UK and international technology suppliers.
Both sides
We run procurement inside contracting authorities and advise the suppliers who sell to them. Few advisers can say either. Fewer can say both.
Advanced Practitioners
Our consultants are Advanced Practitioners of the Procurement Act 2023 and work under the Act every day.
Why Nexus
What you get from working with us.
I
The buyer's view of your bid.
We run procurement inside contracting authorities, so we know how evaluation panels read a submission and what makes a board sign off an award. That knowledge goes into every plan we write and every bid we lead.
II
Decisions built on evidence.
Commissioned market intelligence, contract data and competitor positions, interpreted for your capability and your access route. You see which contracts, which buyers and which routes, and why.
III
Senior consultants, start to finish.
Every engagement is led by a senior consultant from the first workshop to the board presentation, with the accreditation and the practice to match.
The Procurement Act 2023
One law. Two sets of consequences.
The Act changed how public contracts are advertised, evaluated, awarded, modified and reported, and the Cabinet Office's Procurement Compliance Service now investigates how well authorities comply and publishes what it finds.
For private companies it is the rulebook for winning: new procedures, open frameworks, dynamic markets, transparency at every stage and 30-day payment terms. For contracting authorities it is the standard against which every decision can be tested: notices, records, modifications, payments and published findings.
30 days
The payment term the Act implies into every public contract, overriding longer contractual terms and flowing down the supply chain.
£30,000
The level above which individual payments under public contracts are published, so uncontracted spend is visible to anyone who looks.
8 working days
The standstill period after a contract award notice, in which unsuccessful bidders raise concerns with evidence from their assessment summaries.
30 days minimum
The time an authority has to answer a Procurement Compliance Service notice requiring documents and assistance.
Sources: Procurement Act 2023, sections 68, 70 and 108; Cabinet Office guidance on standstill and on procurement compliance and oversight.
Insights
Analysis from the work.
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Contracting authorities→
Apasen v Tower Hamlets: three hours, two notices, £38.5 million of direct awards at risk
On 28 August 2026 the High Court kept alive a claim to set aside £38.5 million of urgent home care contracts awarded directly by Tower Hamlets, because the contract award notice omitted the urgency justification the transparency notice gave three hours earlier. What every authority with an urgent direct award on file should check now.
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Private companies→
PPN 026: the new Social Value Model, and what it means for bidders from 1 January 2027
The Cabinet Office has replaced the Social Value Model for central government. From 1 January 2027, contracts of £5 million and above carry a minimum 20 per cent weighting for social value, scored on two outcomes, good jobs and skills. The bids being planned now are the ones it will decide.
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Contracting authorities→
Eighteen months into the Procurement Act 2023, would your processes withstand scrutiny?
The bedding-in period is over and the Procurement Compliance Service publishes what it finds. Five governance risks decide whether an authority is exposed, and a compliance score shows where it stands.