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    Winvic’s £74m Avonmouth M&S warehouse: design, groundworks and MEP notes for engineers

    November 25, 2025|

    Reviewed by Joe Ashwell

    Winvic’s £74m Avonmouth M&S warehouse: design, groundworks and MEP notes for engineers

    First reported on The Construction Index

    30 Second Briefing

    Winvic Construction has secured a £74m contract from Stoford and Epta Development Corporation to build a 390,000 sq ft Marks & Spencer logistics facility at Plot 5, Axis Works in Avonmouth, due for completion by summer 2026 on a 20-year pre-let funded by LondonMetric. The scheme targets BREEAM Excellent and EPC A, with rainwater harvesting, roof-mounted PV, ASHPs, EV charging and RICS WLCA-based embodied carbon assessment. Technical features include 900 sqm of -18°C to -20°C freezer space, 20,000 sqm of +1°C to +3°C chillers, GEA monitoring, dual backup generators, three new drainage culverts, and ground improvement using prefabricated vertical drainpiles with a Menard piling solution.

    Technical Brief

    • PIR cold box “box within a box” construction provides secondary containment and thermal redundancy for freezer and chiller zones.
    • High-density insulated floors incorporate electric heater mats to control frost heave and slab curling in sub-zero areas.
    • Airtight composite seals, rapid-rise doors, air curtains and pressure relief vents are combined to minimise frost ingress and condensation.
    • Insulated loading docks with inflatable shelters maintain cold-chain continuity during vehicle interface and reduce infiltration loads.
    • GEA temperature monitoring and control links all cold rooms to a central station with continuous data logging and alarm functionality.
    • Dual on-site generators are specified to maintain refrigeration and protect stock during grid outages.
    • Three new culverts carry an existing drainage channel beneath the new access road, maintaining flows across Lower Severn Internal Drainage Board land.
    • Ground improvement uses prefabricated vertical drainpiles with a Menard piling solution to accelerate consolidation and optimise foundation performance.

    Our Take

    Winvic’s £74m Axis Works job follows the £130m Oasis Birmingham contract in our database, signalling that the contractor is building a strong order book across both logistics and residential sectors, which can help smooth workload and resource planning into the late-2020s.

    The combination of sub-zero freezer space, tight chiller temperature bands and dual backup generators at Axis Works indicates a high-spec cold-chain hub for M&S, which typically drives more demanding MEP coordination and commissioning risk than standard big-box warehousing in the UK.

    Three culverts under the access road tied to the Lower Severn drainage channel suggest flood risk and water management will be a critical programme and design driver at Avonmouth, in line with other Infrastructure pieces where drainage boards are directly referenced in project teams.

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    Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.

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