Tender

WP1150 - Survey & Design - Tunnel Vent Vans & Fan Drives

COSTAIN LIMITED (H7-HEATHROW)

This public procurement record has 1 release in its history.

Tender

02 Jun 2026 at 09:20

Tender Notice
Summary of the contracting process

Costain Limited (H7-Heathrow) is the buying organisation for the "WP1150 - Survey & Design - Tunnel Vent Vans & Fan Drives" tender, which falls under the engineering design services category. The procurement process is at the Tender stage, with the tender period ending on 9th June 2026. It focuses on replacing components of the ventilation system at various locations including the Central Terminal Area and Terminal 4 in London, UK. The procurement method details were not specified. The contract is valued at between £2.5 million and £5 million, with the work anticipated to start on 7th August 2026 and conclude by 1st December 2026. The procurement is particularly suitable for SMEs and VCSEs interested in services related to low voltage electrical components and ventilation systems.

This tender presents significant business opportunities, especially for firms specialising in electrical infrastructure and ventilation systems design and implementation. Businesses with RIBA stage 4 design expertise, particularly under the operational constraints of rail networks, will find this an excellent growth opportunity. With the tender encompassing survey and design elements, companies experienced in replacing Variable Speed Drives and associated electrical components will be well-suited to bid. The project also calls for energy-efficient lighting upgrades, providing an additional avenue for businesses specialising in eco-friendly electrical solutions.

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Notice Information

Notice Title

WP1150 - Survey & Design - Tunnel Vent Vans & Fan Drives

Notice Description

Expression of Interest Tunnel Vent, Fans and Fan Drives MEP Subcontractor Tunnel Vent, Fans and Fan Drives (Survey and RIBA 4) Scope The objective of this scope is to replace components that form part of the ventilation system at Central Terminal Area (CTA) North and South, Terminal 4 North and South and Sipson Farm, that are at their end of life. The components of concern are Fan Drives and Low Voltage Air Circuit Breakers. It is proposed that all components for the 8 No. existing Variable Speed Drives (VSD) which are close to their designed lifetime are to be replaced, together with the panel. It is proposed that all components for the 5 No. existing Direct On-Line (DOL) starters which are close to their designed lifetime are to be replaced, together with the panel are replaced with VSD's. The VSDs are to be connected to the Tunnel Control System (TCS). The incoming air circuit breakers (ACB's) and the low voltage protection devices (MCCB/MCB's) within the existing switch gear will be replaced with new devices. Where the impact is significant, this may lead to replacing the entire LV switchgear and the DOL panels for the associated equipment. New lighting will be provided by energy-efficient LED luminaires, as the existing lighting system is in poor condition. As part of small power provision, 240V socket outlet assemblies shall be provided near damper units. The existing junction boxes and cable termination boxes need to be replaced with new equipment. Item Question Q1 What capability do you have of understanding the requirements for replacing Electrical infrastructure etc., Specifically considering the constraints of an operational rail network? Q2 What capability do you have of carrying out a survey of the 5 ventilation buildings non-operational hours to provide all the information required to complete the RIBA 4 design? Note: - RIBA 5 onwards including construction is excluded.

Notice Details

Publication & Lifecycle

Open Contracting ID
ocds-b5fd17-25f831be-e278-45de-ba56-42465ff8de0f
Publication Source
Contracts Finder
Latest Notice
https://www.contractsfinder.service.gov.uk/Notice/30b4b20a-4bc7-4af3-a070-34305c20e5bb
Current Stage
Tender
All Stages
Tender

Procurement Classification

Notice Type
Tender Notice
Procurement Type
Standard
Procurement Category
Services
Procurement Method
Not Specified
Procurement Method Details
Tender Suitability
SME, VCSE
Awardee Scale
Not specified

Common Procurement Vocabulary (CPV)

CPV Divisions

71 - Architectural, construction, engineering and inspection services

CPV Codes

71320000 - Engineering design services

Notice Value(s)

Tender Value
£5,000,000 £1M-£10M
Lots Value
Not specified
Awards Value
Not specified
Contracts Value
Not specified

Notice Dates

Publication Date
2 Jun 20261 weeks ago
Submission Deadline
9 Jun 2026Expired
Future Notice Date
Not specified
Award Date
Not specified
Contract Period
6 Aug 2026 - 1 Dec 2026 1-6 months
Recurrence
Not specified

Notice Status

Tender Status
Active
Lots Status
Not Specified
Awards Status
Not Specified
Contracts Status
Not Specified

Buyer & Supplier

Contracting Authority (Buyer)

Main Buyer
COSTAIN LIMITED (H7-HEATHROW)
Contact Name
Available with D3 Tenders Premium →
Contact Email
Available with D3 Tenders Premium →
Contact Phone
Available with D3 Tenders Premium →

Buyer Location

Locality
MAIDENHEAD
Postcode
SL6 4UB
Post Town
Slough
Country
England
Major Region (ITL 1)
TLJ South East (England)
Basic Region (ITL 2)
TLJ1 Berkshire, Buckinghamshire and Oxfordshire
Small Region (ITL 3)
TLJ15 Berkshire East
Delivery Location
TLI London
Local Authority
Windsor and Maidenhead
Electoral Ward
Oldfield
Westminster Constituency
Maidenhead

Further Information

Notice Documents

Open Contracting Data Standard (OCDS)

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