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Public Sector Website Tender Guide in London (2026)

Mohamed Bah·Fondateur, Kolonell
September 9, 2026
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Public Sector Website Tender Guide in London (2026)

Public Sector Website Tender Guide in London (2026)

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The verdict in three sentences

Redesigning a local authority website means running a public tender whose form depends on thresholds and lotting. Accessibility compliance (WCAG 2.1 AA) is a legal duty, not an option, and must be stated in black and white in the tender rules. In 2026, budget 25,000 to 120,000 EUR, use weighted criteria (often technical 60% / price 40%) and a multi-year maintenance contract.

Thresholds, procedure and 2026 budget

The estimated value determines the procedure. Choosing the wrong procedure exposes the contract to legal challenge.

Estimated value (EUR)Indicative procedurePublicity
< 40,000Direct award / quotesNot mandatory
40,000 – 143,000Below-threshold procedureBuyer portal
> 143,000Formal procedureOfficial journal
Authority type2026 website budget (EUR)Timeline
Small district < 10,000 res.25,000 – 45,0003–5 months
Mid-size borough45,000 – 80,0004–7 months
County / metro authority80,000 – 120,000+6–10 months

Lotting, accessibility and criteria

Lotting (design, development, content, maintenance) widens competition but complicates management. Accessibility compliance must be verified through an accessibility statement and an acceptance audit.

Element2026 requirementCheck
AccessibilityWCAG 2.1 AAAudit + statement
Open dataContract data publicationBuyer portal
Technical criteria60%Technical memo
Price criterion40%Priced schedule
Maintenance3–4 years renewableContractual SLA
ReversibilityData hand-backContract clause

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Mark, digital lead of a borough of 18,000 residents near London, launches a below-threshold tender to rebuild the citizen portal. Estimated budget: 62,000 EUR. He splits it into two lots (design-development / 4-year maintenance). With a 60/40 weighting, the 58,000 EUR bid (full technical memo, audited accessibility commitment) beats a 49,000 EUR bid judged under-scoped on accessibility. Over 4 years, maintenance at 9,000 EUR/year brings the total cost to roughly 94,000 EUR, budgeted as capital plus operating spend.

FAQ

Is accessibility really mandatory for a local authority? Yes. Public bodies must make their digital services accessible and publish a compliance statement. Failing to comply exposes them to sanctions and litigation risk.

Must the contract be split into lots? Lotting is the default principle in public procurement. You can derogate with justification (technical coherence, coordination cost), but the choice must be documented in the tender papers.

What price/technical weighting should I choose? For a public site, 60% technical / 40% price is common in 2026: it values accessibility, security and content migration over price alone.

How long does the procedure take? Expect 6 to 10 weeks from publication to award for a below-threshold procedure, longer for a formal one. Add a build time of 3 to 10 months.

What should the maintenance lot include? A 3- to 4-year contract with an SLA (99.9% uptime, response times) and a reversibility clause guaranteeing data hand-back at contract end.

Let's scope your project. Tell us your authority type, estimated envelope and accessibility constraints, and we'll help structure your tender rules and criteria. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.

Tags:#public tender#public sector website#local authority#accessibility#lotting#weighted criteria#public sector#governance
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Mohamed Bah

Fondateur, Kolonell

Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.