Sustainability and Drainage


The new buildings will achieve a BREEAM 5 star rating.

This will be achieved through passive design measures, including highly thermal efficient building fabric, natural shading where possible, and improved air tightness.

The principle behind the design of the buildings follows the London Plan Energy Hierarchy:

Be Lean - Use Less Energy (passive and active measures)

Be Clean - Supply Energy Efficiently (select the most energy efficient systems)

Be Green - Use Renewable Energy (use renewable energy intelligently)

Low Carbon Technologies

The buildings will utilise the following low or zero carbon technologies to achieve BREEAM Excellent Status:

  • No natural gas supply will be provided to the new buildings in-line with the UK Governments phase out of natural gas boilers.
  • Energy efficient heat pump technology with efficiencies in excess of 300%.
  • Roof mounted solar photovoltaic (PV) panels to allow on-site energy generation with the ability to export electricity to the grid.
  • Energy efficient LED light fittings.
  • Ventilation units which capture at least 70% of the heat energy for re-use.
  • Smart heating, ventilation, air conditioning & lighting controls will be implemented throughout.
  • Electric Vehicle charging points provided for both sites, in excess of the Building Regulation requirements.

Sustainable Drainage

Managing flood risk is an important part of achieving sustainable development.

Sustainable Drainage Systems (SUDS) have a key role to play in flood management for new (and existing) developments.

The site will benefit from an improved overall drainage system, designed to current standards and guidance.

Foul Water

  • Foul drainage will be renewed/ replaced in accordance with the current Building Regulations.
  • The foul system will continue to connect into the Thames Water network.

Surface Water

  • The existing surface water system currently discharges off the site with no flow control. New surface water systems will be provided in accordance with current Sustainable Drainage Guidance.
  • The new System will attenuate (Store on site and release slowly) into the existing site discharge connections. The attenuation provided will significantly reduce the peak flows from the site and reduce flooding risk to the surrounding areas.
  • It will incorporate biodiversity aspects in combination with the landscaping and ecology plans for the site.
  • The new drainage system will have an agreed maintenance regime to ensure its ongoing reliability.