Tree Surgery & Invasive Species Services

Delta wishes to commission experienced and appropriately qualified organisations for the provision of tree surgery and invasive species management services across Delta's estate portfolio.

The Suppliers will be responsible for:

Tree Surgery

o Crown lifting, thinning, and reduction

o Deadwood removal and hazard mitigation

o Tree felling and stump grinding

o Emergency response for storm-damaged or dangerous trees

Invasive Species Services

o Identification and mapping of invasive species (e.g. Japanese knotweed, Himalayan balsam, bamboo)

o Mechanical and chemical control methods (in line with UK regulations)

o Monitoring and follow-up treatments/inspections