Porton Main Plenum Replacement: £7m Pending Direct Award

Tender information last checkedLast checked 8 Oct 2026, 12:21.

Opportunity overview

Full replacement of the asbestos contaminated supply and extract ductwork in the North-East Wing (NEW) Phase of the MPR Project, Building 1, Porton Down.

Awarded to

Amounts belong to published awards or contracts. Where several suppliers share one value, it is labelled as shared and is not a supplier-specific allocation.

Limburn Boiler & Heating Services Ltd

Matched by exact name

Published award value: £7m
Awarded: 7 Oct 2026
Award ID: 1
Status: pending
Identifier: GB-PPON PNMH-3845-LMCP
Location: Portsmouth, UKJ35, PO12 1RL, United Kingdom

Classification

No classification was supplied.

Lots

Lot 1Value not stated

Documents and notices

Transparency notice on Find a TenderOpen source ↗

Published notice details

Additional information from the published procurement release. Fields appear only when supplied by the source; check the original notice and tender documents before acting.

Scope, procedure and submissions

Id: C459586
Status: complete
Procurement Method: direct
Procurement Method Details: Direct award
Why this procedure was chosen: Sch. 5 para. 7 - Additional or repeat goods, services or works The public contract concerns the supply of goods, services or works by the existing supplier which are intended as an extension to, or partial replacement of, existing goods, services or works in circumstances where (a) a change in supplier would result in the contracting authority receiving goods, services or works that are different from, or incompatible with, the existing goods, services or works, and (b) the difference or incompatibility would result in disproportionate technical difficulties in operation or maintenance.

Legal basis

Id: 2023/54
Scheme: UKPGA
Uri: https://www.legislation.gov.uk/ukpga/2023/54/contents ↗

Procedure reasons

Entry 1

Id: additionalRepeatExtensionPartialReplacement

Lots and requirements

Entry 1

Id: 1
Status: complete

Suitability

Sme: Yes
Vcse: Yes

Published documents

Entry 1

Id: conflictOfInterest
Document Type: conflictOfInterest
Description: Not published

Buyer, suppliers and contacts

Organisation 1

Name: Secretary of State for Health and Social Care acting as part of the Crown through UK Health Security Agency
Id: GB-PPON-PBMQ-7576-DVGW

Identifier

Scheme: GB-PPON
Id: PBMQ-7576-DVGW

Address

Street Address: 10 South Colonnade
Locality: London
Postal Code: E14 4PU
Country: GB
Country Name: United Kingdom
Region: UKI42

Contact

Email: procurementnotices@ukhsa.gov.uk

Roles

buyer

Details

Url: https://www.gov.uk/government/organisations/uk-health-security-agency ↗

Classifications

Entry 1

Scheme: UK_CA_TYPE
Id: publicAuthorityCentralGovernment
Description: Public authority - central government

Organisation 2

Name: Limburn Boiler & Heating Services Ltd
Id: GB-PPON-PNMH-3845-LMCP

Identifier

Scheme: GB-PPON
Id: PNMH-3845-LMCP

Address

Street Address: Unit 1 Gerard House, Cranbourne Road, Gosport
Locality: Portsmouth
Postal Code: PO12 1RL
Country: GB
Country Name: United Kingdom
Region: UKJ35

Contact

Email: richard@limburns.co.uk

Roles

supplier

Details

Scale: sme
Vcse: No

Award information

Award 1

Id: 1
Title: Limburn Boiler & Heating Services Ltd
Status: pending
Main Procurement Category: works
Above Threshold: Yes

Items

Item 1

Id: 1
Related Lot: 1

Additional Classifications

Entry 1

Scheme: CPV
Id: 45210000
Description: Building construction work

Value

Including VAT: 7,000,000
Amount: 7,000,000
Currency: GBP

Suppliers

Supplier 1

Id: GB-PPON-PNMH-3845-LMCP
Name: Limburn Boiler & Heating Services Ltd

Contract period

Starts: 22 Oct 2026, 00:00
Ends: 30 Jul 2027, 23:59

Related lots

Documents

Entry 1

Id: 095080-2026
Document Type: awardNotice
Notice Type: UK5
Description: Transparency notice on Find a Tender
Url: https://www.find-tender.service.gov.uk/Notice/095080-2026 ↗
Published: 8 Oct 2026, 11:04
Format: text/html

Milestones

Entry 1

Id: 1
Type: futureSignatureDate
Due: 22 Oct 2026, 23:59
Status: scheduled

Recorded locations

Buyer location · London · UKI42 · E14 4PU · United Kingdom

Notice and amendment history

2 published notice versions reviewed by ProcuraAxis.

2 VERSIONS

095080-2026Transparency notice on Find a Tender · 8 Oct 2026, 11:04
095092-2026Contract award notice on Find a Tender · 8 Oct 2026, 11:10

PROCURAAXIS AWARD ANALYSIS

Award outcome intelligence

Evidence-bound analysis of the published award appears below the official tender and award information.

ANALYSIS PREVIEW

Award intelligence at a glance

UK Health Security Agency has published a transparency notice for a proposed direct award to LIMBURN BOILER & HEATING SERVICES LIMITED for replacement of asbestos-contaminated supply and extract ductwork at Building 1, Porton Down. The published award remains pending and is not evidence of a signed or active contract.

Published outcome signals

Published noticeTransparency notice published 8 October 2026Evidence: Award document 095080-2026 is described as a Transparency notice on Find a Tender and dated 2026-10-08T11:04:51+01:00.
Award statusPendingEvidence: Award 1 has status "pending".
Contract conclusionNot confirmedEvidence: The award is pending; no signed-contract record is supplied.

96% approved-analysis confidence1 supplier record analysed4 source limitations

SOURCE AND FRESHNESS

Traceable procurement data

Source: Find a Tender
Notice reference: 095080-2026
OCID: ocds-h6vhtk-07837a
First published: 8 Oct 2026
Last checked: 8 Oct 2026, 12:21
Notice versions reviewed: 2

View Find a Tender notice ↗

HOW THIS WAS PREPARED

Approved, evidence-bound analysis

ProcuraAxis structures information found in published procurement records, checks the result for consistency and publishes only approved analysis. Confidence describes the completeness and consistency of the available source information; it is not a guarantee of eligibility or contract award.

Analysis status: Approved for publication
Analysed: 8 Oct 2026

Read the analysis methodology →

AWARD OUTCOME

What happened

Published outcome

One pending award, valued at £7,000,000 gross, is allocated to LIMBURN BOILER & HEATING SERVICES LIMITED for lot 1.

Market significance

This is a high-value, above-threshold works requirement awarded through a direct-award route, justified by compatibility and disproportionate technical-difficulty considerations relating to existing works.

AWARDED SUPPLIERS AND LOTS

1 supplier record analysed

LIMBURN BOILER & HEATING SERVICES LIMITED

99% confidence

Award 1 · Lots 1 · 7000000 GBP · pending

View supporting evidence

Verified company name supplied for award 1; award 1 lists the supplier and a gross value of GBP 7,000,000.

LIFECYCLE

Award or contract stage

Published notice

99% confidence

Transparency notice published 8 October 2026

View supporting evidence

Award document 095080-2026 is described as a Transparency notice on Find a Tender and dated 2026-10-08T11:04:51+01:00.

Award status

99% confidence

Pending

View supporting evidence

Award 1 has status "pending".

Contract conclusion

99% confidence

Not confirmed

View supporting evidence

The award is pending; no signed-contract record is supplied.

Planned signature date

98% confidence

22 October 2026

View supporting evidence

Award milestone type futureSignatureDate is scheduled for 2026-10-22T23:59:59+01:00.

VALUES

Published values explained

Award value

99% confidence

£7,000,000 gross

View supporting evidence

Award 1 value states amountGross 7000000, amount 7000000, currency GBP.

Value allocation

96% confidence

Allocated to the single pending award for lot 1

View supporting evidence

Award 1 is the only supplied award, is related to lot 1, and names one supplier.

TIMELINE

Procurement timeline

Notice publication

99% confidence

8 October 2026

View supporting evidence

Award notice document datePublished is 2026-10-08T11:04:51+01:00.

Award date

96% confidence

8 October 2026

View supporting evidence

Supplied award record gives award_date 2026-10-08T00:00:00+01:00.

Planned contract start

98% confidence

22 October 2026

View supporting evidence

Award 1 contractPeriod startDate is 2026-10-22T00:00:00+01:00.

Planned contract end

98% confidence

30 July 2027

View supporting evidence

Award 1 contractPeriod endDate is 2027-07-30T23:59:59+01:00.

SCOPE

What was awarded

Requirement

99% confidence

Full replacement of asbestos-contaminated supply and extract ductwork

View supporting evidence

Tender description states this requirement.

Site and project area

99% confidence

North-East Wing phase of the MPR Project, Building 1, Porton Down

View supporting evidence

Tender description identifies the location and project phase.

Procurement category

99% confidence

Works

View supporting evidence

Award 1 mainProcurementCategory is works.

Classification

99% confidence

CPV 45210000 — Building construction work

View supporting evidence

Award item 1 gives this CPV classification.

Lot structure

99% confidence

One supplied lot (lot 1); no lot title or description published

View supporting evidence

Tender and award records reference lot 1; supplied lot title and description are null.

PROCEDURE

Procedure and competition

Procedure

99% confidence

Direct award

View supporting evidence

Tender procurementMethodDetails is "Direct award".

Direct-award rationale

99% confidence

Additional or repeat goods, services or works; changing supplier was stated to risk incompatibility and disproportionate technical difficulties in operation or maintenance

View supporting evidence

Published procurementMethodRationale cites Schedule 5 paragraph 7 and provides this explanation.

Threshold status

99% confidence

Above threshold

View supporting evidence

Award 1 aboveThreshold is true.

Competition information

99% confidence

Not published

View supporting evidence

No bid, participant, evaluation, score or ranking data are supplied.

CONTRACT TERMS

Published contract terms

Planned term

98% confidence

22 October 2026 to 30 July 2027

View supporting evidence

Award 1 contractPeriod provides these dates.

Signature status

99% confidence

Future signature milestone scheduled; signature not confirmed

View supporting evidence

The futureSignatureDate milestone is scheduled for 22 October 2026 and the award status is pending.

Extension or renewal terms

99% confidence

Not published

View supporting evidence

No extension or renewal provisions are supplied.

COMMERCIAL VIEW

Commercial observations

Commercial route

97% confidence

The buyer has relied on a continuity and technical-compatibility rationale rather than an openly competed route.

View supporting evidence

The published direct-award rationale states that a supplier change would create incompatibility and disproportionate technical difficulties.

Delivery status

99% confidence

No delivery, mobilisation or performance evidence is published in the supplied data.

View supporting evidence

The award remains pending and no performance records are supplied.

ANALYSIS QUALITY

96%overall confidence

Confidence reflects the completeness and consistency of the published award data.

Reference: ocds-h6vhtk-07837a
Analysed: 8 Oct 2026

APPROVED AWARD ANALYSIS

BUYER CONTEXT

Buyer context

Buyer

99% confidence

Secretary of State for Health and Social Care acting as part of the Crown through UK Health Security Agency

View supporting evidence

Buyer party name in the published procurement data.

Buyer type

99% confidence

Central government public authority

View supporting evidence

Buyer classification is publicAuthorityCentralGovernment.

Buyer location

99% confidence

London, United Kingdom

View supporting evidence

Buyer address lists 10 South Colonnade, London, E14 4PU.

SUPPLIER CONTEXT

Supplier context

Legal supplier identity

99% confidence

LIMBURN BOILER & HEATING SERVICES LIMITED (company number 04303323)

View supporting evidence

Supplier verification gives verifiedCompanyName LIMBURN BOILER & HEATING SERVICES LIMITED and verifiedCompanyNumber 04303323 via exact-name matching.

Supplier verification status

99% confidence

Verified; company status supplied as Active

View supporting evidence

Supplier verification record has status verified, matchMethod exact_name and verifiedCompanyStatus Active.

Published trading-style name

99% confidence

Limburn Boiler & Heating Services Ltd

View supporting evidence

The source supplier party and award title use this name.

Supplier scale

98% confidence

SME

View supporting evidence

Supplier party details list scale as sme.

RENEWAL OUTLOOK

Renewal outlook

Estimated re-procurement reference point

78% confidence

Around 30 July 2027, subject to any unpublished extension, replacement, variation or termination

View supporting evidence

This is an estimate based solely on the explicit planned end date of 30 July 2027; no renewal terms are supplied.

DATA QUALITY

Gaps and source limitations

Pending award versus contract

99% confidence

The record is labelled awarded in the opportunity feed but the underlying award status is pending. It is treated here as a proposed award, not as a concluded, signed or active contract.

View supporting evidence

Process display_status is awarded while award 1 status is pending and a future signature date is scheduled.

Information not supplied in the published notice

99% confidence

Bid counts, competing suppliers, evaluation results, pricing breakdown, lot title, detailed lot scope, contract signature confirmation, extension terms and renewal options are not supplied.

View supporting evidence

These fields are absent or null in the supplied data.

Value basis

99% confidence

The published award records £7,000,000 as both amount and amountGross; no further tax or pricing breakdown is supplied.

View supporting evidence

Award 1 value contains amountGross 7000000 and amount 7000000.

SOURCE DATA LIMITATIONS

Information not supplied in the published notice

The underlying award is pending, so the supplied data do not confirm that a contract has been signed, commenced or remains active.
Information not supplied in the published notice: tender competition, bid count, evaluation and award scoring, detailed pricing, contract documents, performance terms, extensions and renewal options.
Lot 1 has no supplied title, description or separate lot value.
The published contract period and signature milestone are future/planned dates, not evidence of delivery or completion.

MARKET THEMES

Relevant award themes

COMMON QUESTIONS

About this award

Who is named for the Porton Main Plenum Replacement award?

LIMBURN BOILER & HEATING SERVICES LIMITED, verified under company number 04303323, is named for the pending award.

What is the stated value of the award?

The pending award is stated as £7,000,000 gross.

Has the Porton Down contract been signed?

Not confirmed. The supplied award is pending and shows a future signature date of 22 October 2026.

Why was a direct award used?

The published rationale cites continuity, compatibility and disproportionate technical difficulties if the supplier changed.

ProcuraAxis award analysis supplements, but does not replace, the official award notice, contract data or procurement documents. “Awarded” does not by itself prove that a contract has been signed.

Porton - Main Plenum Replacement (North-East Wing)

Opportunity overview

Awarded to

Limburn Boiler & Heating Services Ltd

Classification

Lots

Documents and notices

Published notice details

Scope, procedure and submissions

Legal basis

Procedure reasons

Lots and requirements

Suitability

Published documents

Buyer, suppliers and contacts

Identifier

Address

Contact

Roles

Details

Classifications

Identifier

Address

Contact

Roles

Details

Award information

Items

Additional Classifications

Value

Suppliers

Contract period

Related lots

Documents

Milestones

Recorded locations

Notice and amendment history

Award intelligence at a glance

Published outcome signals

Traceable procurement data

Approved, evidence-bound analysis

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