NO2 Exit Modelling

Portsmouth City Council
South East
13 March 2026 to 1 November 2026

Technical traffic and air quality modelling services specifically focused on the exit strategy for a Clean Air Zone. The work involves complex data analysis and simulation to evaluate the impact of policy changes on nitrogen dioxide levels and traffic flow patterns within the designated zone.

Open the official notice

Awarded value: £138k; As published
Published: 24 March 2026
Awarded: 26 January 2026; AtkinsRéalis
Contract length: 8 months; Ends 1 November 2026

What the contract covers

Technical modelling services

Provision of specialist traffic and air quality modelling services to support local authority Clean Air Zone policy development and assessment.

Traffic modelling for the Clean Air Zone (CAZ)
Air quality modelling for the Clean Air Zone (CAZ)

Terms and requirements

Contract type: Technical modelling services
Initial term: 8 months
Contract dates: 13 March 2026 to 1 November 2026
Certifications asked for: None stated
Lots: 1
Suitable for SMEs: Not stated
CPV codes: 71311210

Services in this contract

Air quality assessment, modelling and LAQM supportMain service£40k typicalAir quality modelling for the Clean Air Zone
Transport modelling and scheme appraisal£88k typicalTraffic modelling for the Clean Air Zone

Lifecycle

Published
24 March 2026
Contract awardedto AtkinsRéalis
26 January 2026
Contract starts
13 March 2026
Contract ends
1 November 2026

The buyer

Portsmouth City Council

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The supplier

AtkinsRéalis

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Cite this contract

Link: https://bidskim.com/tender/356060/no2-exit-modelling
Buyer reference: C00010837
Open contracting ID: ocds-h6vhtk-067298
Last checked: 5 November 2026

Portsmouth City Council. NO2 Exit Modelling. Contract award, 24 March 2026. BidSkim, https://bidskim.com/tender/356060/no2-exit-modelling (accessed 5 November 2026).