Delivering net gain outcomes for biodiversity

The Network Rail Thameslink Programme was the first Network Rail Infrastructure Project to achieve ‘net gain’ outcomes for biodiversity. Its approach to deliver biodiversity net gain was named as a demonstration project by Defra and received wide acclaim, including from the Institute of Environmental Management and Assessment and from Natural England.

The impact on ecology and biodiversity from our works in central London was fairly limited as opposed to our other Outer London locations. However, despite this the railway network provides important corridors and stepping stones for London wildlife. For example, to enhance ecology and biodiversity the Farringdon station project created new habitats by incorporating a brown roof into the new ticket hall building.

The overall biodiversity net gain achieved by Thameslink Programme was 56%.  Thameslink Programme’s approach to deliver biodiversity net gain has now been rolled out to Network Rail Infrastructure Projects.

Delivering Net Gain for Biodiversity

This report sets out how the Thameslink Programme achieved biodiversity net gain through the application of good practice. It includes:

  • Quantifying biodiversity losses and gains
  • Using biodiversity metrics appropriately
  • Engaging senior managers
  • Training TLP staff and its supply chain
  • Engaging local, grassroots wildlife groups
  • Achieving biodiversity net gain
  • Developing a Biodiversity Offset Management Plan
  • Undertaking lessons learnt.

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Case Studies

Biodiversity: Farringdon Station

The integration of a living roof into the Farringdon station design set the standard for best practice in Ecology and Biodiversity across Thameslink Programme.

Biodiversity: London Bridge station

Revitalising Snowsfields Primary Schools’ wildlife garden, as part of the sustainability drive throughout the design and construction of London Bridge station