Services · Core

Great Crested Newt Surveys

Great crested newts are one of the most common triggers for further ecological survey in UK planning. We deliver eDNA testing, traditional presence/absence surveys and population class assessments — with licensing and mitigation support if newts are confirmed.

eDNA window15 Apr – 30 Jun
Traditional seasonMid-Mar – Mid-Jun
ProtectionEuropean Protected Species
Key methodeDNA water sampling

Overview

The great crested newt (Triturus cristatus) is a European Protected Species and one of the most frequently encountered protected species in UK planning. If your PEA identifies ponds or other suitable breeding habitat within 500 metres of your site, great crested newt surveys will almost certainly be required before your planning application can proceed.

eDNA (environmental DNA) testing has transformed GCN surveying. A single water sample collected from a pond between 15 April and 30 June, analysed in a Natural England-approved laboratory, can confirm whether great crested newts are using the waterbody. It's faster, less invasive and more cost-effective than traditional survey methods for establishing presence or likely absence.

Where presence is confirmed or where eDNA isn't suitable, traditional surveys — torch counts, bottle trapping, egg searching and refuge searches — are used across a minimum of four visits to establish population size class. This information feeds directly into impact assessment and mitigation design, including European Protected Species licence applications where necessary.

When you need this

  • Your PEA identifies ponds or suitable breeding habitat within 500 m of the development site
  • Biological records show great crested newts in the area
  • The local planning authority specifically requests GCN survey
  • Your site includes or is adjacent to ditches, wet woodland or other waterbodies
  • You are applying for a development that will affect terrestrial habitat used by newts for foraging, sheltering or hibernating

Our approach

  1. 01
    Habitat Suitability Index (HSI)

    Each pond within the search radius is scored on ten attributes — area, shading, water quality, fish presence, waterfowl and others — to prioritise which waterbodies need survey.

  2. 02
    eDNA water sampling

    Water samples are collected between 15 April and 30 June following strict protocols and sent to a Natural England-approved laboratory. Results confirm presence or likely absence within two to three weeks.

  3. 03
    Traditional survey (if required)

    A minimum of four visits between mid-March and mid-June — at least two between mid-April and mid-May — using torch counts, bottle traps, egg searches and refuge checks to establish population size class.

  4. 04
    Impact assessment & mitigation

    If newts are confirmed, we assess the impact, design mitigation (habitat creation, translocation fencing, receptor sites) and prepare European Protected Species licence applications to Natural England where required.

Frequently asked questions

01What is eDNA testing for great crested newts?+
Environmental DNA testing detects great crested newt presence from genetic material shed into pond water — skin cells, mucus and waste. A water sample is collected following a standardised protocol and analysed in an approved laboratory. A positive result confirms newts are using the pond; a negative result is treated as likely absence.
02What happens if great crested newts are found on my site?+
Development can still proceed, but you'll need a mitigation strategy. Depending on the impact, this may require a European Protected Species licence from Natural England, including a method statement, habitat compensation and post-development monitoring. We handle the full licensing process.
03Can I survey outside the eDNA season?+
eDNA is only valid between 15 April and 30 June. Outside this window, traditional surveys can be used between mid-March and mid-June. If both windows have passed, you'll need to wait until the following spring — which is why early PEA commissioning matters.
04What is District Level Licensing?+
District Level Licensing is a Natural England scheme that operates in certain areas of England. Instead of site-level survey and mitigation, developers pay a conservation payment that funds strategic habitat creation. It can significantly speed up the planning process where available.
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