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Forensic Tender Analysis·UK·23 active

Read Every Page. Flag Every Risk.
Construction Tenders in UK.

Drop any Construction tender document. Lucius reads every clause, surfaces hidden penalty clauses, and drafts your compliance response. In UK.

Lucius AI is a compliance-first tender writing platform for construction firms bidding into UK tenders. It audits any construction RFP, tender or contract for clause-vs-clause contradictions, penalty traps and compliance gaps with page-cited evidence, then drafts compliant proposals across the full bid in 1M-context, no copy-paste contradictions. Free Scout plan (2 analyses/month, no credit card); paid plans from €45/month, cancel anytime. Unlike ChatGPT, Lucius AI parses NEC4 contract data and produces compliant method statements aligned with the Crown Commercial Service standards. This prevents generic AI hallucination, saving tender writers drafting full bid responses ~14h per Construction Works and Associated Services (CWAS) cycle.

76
open construction tenders in UK in our catalog
1,584
open across all sectors in UK
16 days
median time left to deadline

Buyers with the most open construction tenders right now: London Borough of Haringey; ENGINEERING CONSTRUCTION INDUSTRY TRAINING BOARD; Corserv Solutions Ltd.

Live counts from the Lucius tender catalog, 2026-08-24.

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Capabilities

What Lucius Finds in Your Tender

Compliance Matrix

Every mandatory and scored requirement extracted with page references

Risk Flags

Hidden penalty clauses, unlimited indemnity, liability traps surfaced automatically

Draft Response

AI-generated proposal sections matching your company tone and past wins

Deadline Tracker

Submission dates, clarification windows, and key milestones extracted

Active Construction Opportunities in the UK

Updated today

Excavation, Cable Laying and Reinstatement for Isles of Scilly

N/A·25/09/2026·UKSource
Analyze

Asbestos Management

£125,000,000·25/09/2026·UKSource
Analyze

Framework for The Supply, Installation, Maintenance and Relocation of Stairlifts, Vertical/Platform Lifts and Ceiling Hoists

£1,100,000·18/09/2026·UKSource
Analyze

Inside the Lucius Tender Analysis Workflow

Every tender that lands in Lucius runs through a five-stage forensic pipeline. Each stage produces an artefact a bid team can act on: not a generic summary, but page-cited evidence that holds up under legal review.

  1. 01

    1. Document ingestion across formats

    PDFs, DOCX, Excel scoresheets, ZIP packages of RFP attachments, OJEU/UK FTS notices, AusTender ATM bundles. The Files API with explicit caching means a 300-page tender is analysed in roughly the same wall-clock time as a 30-page one. Vision-based table extraction recovers data from scanned procurement forms where most OCR pipelines drop columns.

  2. 02

    2. Compliance matrix extraction

    Every Shall, Must, Required, and Mandatory clause is captured with its page reference and clause number. Scored questions are separated from pass/fail gates. Lucius distinguishes minimum-eligibility threshold criteria from weighted-scoring criteria, a distinction most spreadsheet workflows blur to their cost.

  3. 03

    3. Risk surface audit

    Unlimited-indemnity clauses, payment terms below 30 days, IP assignment language, force-majeure asymmetries, and unilateral termination rights are flagged automatically. Each flag includes the exact contract language and a one-sentence consequence in plain English: what specifically would happen to the bidder if the clause activates.

  4. 04

    4. Clause-vs-clause contradiction detection

    A Deep Think pass identifies internal contradictions across the full document. For instance, "remote delivery permitted" in Section 5.3 is contradicted by "on-site presence required" in Section 8.2. These are the traps that disqualify bids in compliance review even when every individual section reads fine in isolation.

  5. 05

    5. Response draft generation

    Each scored question gets a draft answer seeded from your won-bid library. The draft cites which past win the answer is drawn from, so a senior writer can verify pedigree before signing off. Export to your corporate Word template with formatting preserved, ready for legal review and submission.

Questions & Answers

Our tender writing process integrates the Common Assessment Standard directly into the drafting phase, ensuring all health, safety, and environmental narratives meet Build UK's requirements. We systematically map your company's existing accreditations against the CAS question sets to draft compliant, evidence-backed responses.

NEC4 Contract DraftingCommon Assessment StandardPPN 06/20 Social Value

The State of Construction Procurement in UK

Updated

## Gemini-Driven Matrix Extraction for JCT and NEC4 Construction RFPs

When evaluating complex infrastructure tenders published via Find a Tender (FTS), tender writers must dissect hundreds of pages of project specifications, employer's requirements, and prelims. Using Lucius AI's Gemini-extracted compliance matrix capabilities, bid teams upload large document sets—including JCT Design and Build 2024 contracts or NEC4 Option B schedules—to map every mandatory requirement automatically. For instance, on a £14.5 million primary school extension tendered by the Education and Skills Funding Agency via the Crown Commercial Service framework RM6240, Lucius AI parses the site waste management plan, BREEAM 'Excellent' target criteria, and PAS 91 questionnaire items into a structured checklist. The platform assigns exact clause identifiers, such as Section 4.12 of the Employer's Requirements regarding Working Hours Restrictions, ensuring writers never miss a mandatory technical returnable or key performance indicator prior to drafting.

## Automated Flagging of Asymmetric Indemnities and Liquidated Damages

Construction tender documents frequently contain onerous commercial terms hidden within special conditions of contract. Lucius AI automatically analyzes draft schedules to highlight high-risk commercial exposures under the Procurement Act 2023 guidelines. If an NHS Foundation Trust issuing a £22 million ward refurbishment tender under the NHS Provider Selection Regime includes an unaligned liquidated and ascertained damages (LADs) clause of £45,000 per week alongside unlimited environmental indemnity liabilities, Lucius AI flags these asymmetric obligations instantly. By contrasting these provisions against standard JCT 2024 benchmarks, the system flags the risk level and drafts formal Requests for Information (RFIs) or proposed contract clarifications to present to the contracting authority before the final clarification window closes.

## Deep Think Contradiction Audits Across Bill of Quantities and Prelims

In major civil works and building bids, discrepancies between the Architect's Preliminaries, the Structural Engineer's Specification, and the Pricing Schedule often lead to catastrophic mispricing or immediate disqualification. Lucius AI utilizes a Deep Think contradiction audit to evaluate every uploaded file simultaneously for cross-document friction. For example, during a 2026 Highways England regional maintenance tender, the Preliminaries document specified a night-shift working window from 22:00 to 05:00 under strict noise limits, while the Bill of Quantities assumed standard daytime labor rates for 1,200 hours of asphalt resurfacing. Lucius AI isolates this conflict, pinpoints the conflicting paragraph numbers across both PDF files, and alerts the estimator and tender writer to align the method statement before submission.

## File Search Citations and Historical Method Statement Grounding

Writing bespoke technical responses for quality questions—such as social value commitments under PPN 017 or site safety logistics under the Building Safety Act 2022—requires pulling verified data from previously won bids. Lucius AI uses File Search citations and vector caching via the Files API to query an enterprise's secure library of past winning submissions. When a writer drafts a response for a £8 million leisure center development for a local authority, Lucius AI retrieves exact statistics from a previously awarded 2025 scheme—citing how the contractor achieved a 98% diversion from landfill and 15% local supply chain spend. The platform drafts the new response incorporating these exact, verified historical proof points, hyperlinking the internal source file for editorial sign-off.

## Procurement Act 2023 Submission Readiness and Gatekeeping Checks

Before final package upload to portals such as ProContract or Contracts Finder, the complete bid pack must undergo a strict portal compliance audit. Lucius AI executes an automated submission readiness check, evaluating the drafted content against the tender's mandatory evaluation schema, word counts, formatting rules, and statutory requirements mandated under the Procurement Act 2023. On a £30 million residential development tendered by Homes England, the system verifies that the tenderer's carbon reduction plan meets current PPN 017 standards, checks that all 12 quality response schedules adhere to the strict 2,000-word limit, and confirms that signed Form of Tender and Non-Collusion Certificates are attached, eliminating administrative non-compliance risks before submission.

Bidders into UK construction contracts compete under Find a Tender, Contracts Finder, JCT/NEC4 frameworks and Crown Commercial Service agreements. Sector-specific compliance bars include CDM 2015, JCT/NEC4 form selection, retention bonds, social value and net-zero commitments. Lucius AI maps each one to your response with a page-cited audit trail, so legal review reads as fast as engineering review.

Lucius vs generic LLMs for tender writing in Construction / UK

Unlike ChatGPT, Lucius AI parses NEC4 contract data and produces compliant method statements aligned with the Crown Commercial Service standards. This prevents generic AI hallucination, saving tender writers drafting full bid responses ~14h per Construction Works and Associated Services (CWAS) cycle.

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How Tender Writing Works

1

Upload

Drop any RFP, ITT, or contract PDF

2

Forensic Audit

AI reads every page, extracts all requirements

3

Risk Report

Penalty clauses, liability traps, compliance gaps

4

Draft Response

Get a structured proposal with citation trails

UK Procurement Portals

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Related reading

Guides for construction bidders.