Tree Surgery & Invasive Species Services

Delta Housing Limited
East of England
Open procedure
14 September 2026 to 13 September 2029

The contract covers two lots: tree surgery including crown lifting, thinning, reduction, felling, stump grinding, and emergency storm response; and invasive species management involving identification, mapping, mechanical and chemical control, and ongoing monitoring. Services are required across the buyer's estate portfolio with a focus on hazard mitigation and long-term treatment plans.

Open the official notice

Awarded value: Not published
Published: 15 April 2026
Awarded: 20 July 2026; Glendale, Japanese Knotweed Ltd and Connick Tree Services Limited
Contract length: 36 months; Ends 13 September 2029

What the contract covers

Service lot

Provision of professional tree surgery and invasive species management services for housing association estate portfolios and grounds maintenance.

Crown lifting, thinning and reduction
Deadwood removal and hazard mitigation
Tree felling and stump grinding
Emergency response for storm-damaged or dangerous trees
Identification and mapping of invasive species
Mechanical and chemical control methods in line with UK regulations
Monitoring and follow-up treatments and inspections

Lot	Estimated value	SMEs
Lot 1	Not stated	Not stated
Lot 2	Not stated	Not stated

Terms and requirements

Contract type: Service lot
Procedure: Open procedure
Initial term: 36 months
Extensions: 24 months
Longest it can run: 60 months
Contract dates: 14 September 2026 to 13 September 2029
Certifications asked for: None stated
Lots: 2
Suitable for SMEs: Yes
Suitable for charities and social enterprises: Yes
Category: Services
CPV codes: 77200000, 77300000, 77211500, 77340000

Services in this contract

Tree surgery and tree worksMain service£25k typicalTree surgery across the estate: crown work, felling, stump grinding, emergency response
Invasive non-native plant control£49k typicalInvasive species identification, control and monitoring as its own lot

Lifecycle

Published
15 April 2026
Contract awardedto Glendale, Japanese Knotweed Ltd and Connick Tree Services Limited
20 July 2026
Contract starts
14 September 2026
Contract ends
13 September 2029

The buyer

Delta Housing Limited

Type: Locked
Contracts, 24 months: Locked
Recorded value: Locked
Typical contract: Locked
Giant hogweed removal contracts, 24 months: Locked

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Contact details

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The suppliers

Glendale

Contracts won, 24 months: Locked
Value won, 24 months: Locked

Japanese Knotweed Ltd

Contracts won, 24 months: Locked
Value won, 24 months: Locked

Connick Tree Services Limited

Contracts won, 24 months: Locked
Value won, 24 months: Locked

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Cite this contract

Link: https://bidskim.com/tender/2866717/tree-surgery-and-invasive-species-services
Buyer reference: DH-2026-DN812896
Open contracting ID: ocds-h6vhtk-0682ee
Last checked: 5 November 2026

Delta Housing Limited. Tree Surgery & Invasive Species Services. Contract award, 15 April 2026. BidSkim, https://bidskim.com/tender/2866717/tree-surgery-and-invasive-species-services (accessed 5 November 2026).