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AwardedAwarded 14 July 2026

Provision for Cornmill Meadows Hydrological Study

Lee Valley Regional Park Authority · Local or regional public body

In brief

Lee Valley Regional Park Authority awarded architecture and engineering and environmental work to Adler & Allan Limited on 14 July 2026.

The notice gives a value of £40,000 excluding VAT.

The contract runs for 1 year, starting 20 July 2026.

Built from the notice's own fields. Always check the official notice before you bid.

What the notice says

Lee Valley Regional Park Authority invites tenders for an in-depth Hydrological Study at Cornmill Meadows, Waltham Abbey, EN9 2ES. Cornmill Stream and Old River Lea SSSI is designated for its outstanding assemblage of dragonflies and damselflies. A high-level survey of the site in 2022 found that these species are under threat due to falling water levels and highlighted the urgency of an in-depth hydrology survey to assess the causes and plan for remediation. In addition, work currently underway at the neighbouring Royal Gunpowder Mills (RGM) site seeks to address issues with the co-located Waltham Abbey SSSI. The next stage of that project requires monitoring of water flows in the Cornmill Stream and Old River Lea. The results of this study should meet that demand. Our aim is to understand the hydrology of the Cornmill Stream and Old River Lea SSSI, with particular reference to water flows through the site, and to inform future water management requirements, including under extreme conditions which may occur due to climate change.

Who won

WinnerValueDates
Adler & Allan Limited (SME)
5 bids received
£42,414
Awarded 14 July 2026

Values as the award notice gives them, excluding VAT where stated.

Timeline

  1. Tender notice · UK4, notice 041271-2026
  2. Contract award notice · UK6, notice 067214-2026

About the buyer

Lee Valley Regional Park AuthorityLast 12 months

Procurements

23

Awards

17

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From notice 041271-2026 on Find a Tender, first published 6 May 2026, last updated 16 July 2026. We last checked for changes on 28 September 2026.