Northern Buckinghamshire forms part of the Great Ouse catchment, creating an important freshwater connection with neighbouring counties. The River Great Ouse passes through the north of Buckinghamshire around Buckingham, accompanied by the River Ouzel, River Ray and numerous smaller watercourses.

Further south, the River Thame rises north of Aylesbury before flowing through the Vale and eventually joining the Thames in neighbouring Oxfordshire. Aylesbury Vale therefore contains a substantial network of rivers, streams, floodplains and drainage features. This connectivity is relevant when considering species capable of dispersing through freshwater systems.

However, suitable habitat or catchment connectivity should not be treated as evidence that beavers are present.

For individual developments, current records, field evidence, habitat suitability and the proposed works should determine whether further assessment is appropriate.

Gloucestershire is actively preparing for the possible return of free living beavers.

Gloucestershire Wildlife Trust, working with Forestry England, has undertaken a county wide Beaver Reintroduction Feasibility Study examining where beavers could potentially establish and how their return could interact with people, infrastructure, land management and other wildlife.

Initial habitat assessment identified more than 1,000 kilometres of Gloucestershire watercourses that could potentially provide suitable beaver habitat.

The work has included ecological assessment, habitat suitability modelling, consideration of flood risk and potential dispersal patterns, and engagement with landowners and other stakeholders.

Gloucestershire Wildlife Trust has welcomed the introduction of England's licensing framework for wild beaver releases and continues to explore whether a future wild release would be suitable for the county.

This should not be interpreted as evidence that beavers are already established throughout Gloucestershire.

For planning applications, current ecological records and site evidence remain more important than future reintroduction proposals.

Central Somerset contains another extensive freshwater network centred on the River Tone and River Parrett. The Tone flows through the Taunton area before joining the Parrett, while numerous tributaries, drains and wetland habitats create connections with the wider Somerset Levels.

Free living beavers have been recorded within the Tone catchment.

For development around Taunton and the surrounding river network, ecological assessment may therefore need to consider current beaver records alongside other protected species and freshwater constraints.

The presence of suitable habitat alone should not be used to determine whether a Beaver Survey is required.

Cornwall has become particularly significant in the return of beavers to the English landscape. The Cornwall Beaver Project began with beavers in a five acre enclosed site alongside Nankilly Water near Ladock, where their effects on water flow, wetland creation and biodiversity have been studied. More recently, Cornwall has moved into a new phase of beaver recovery. Following approval from Natural England, the county's first fully licensed wild beaver release took place in February 2026, with animals released as part of a long term project within the Par and Fowey river catchment. Wild beavers are also established within the Tamar catchment. For planning and development, this means beaver considerations are becoming increasingly relevant to projects affecting suitable freshwater and riparian habitat within Cornwall. A site does not need to be immediately adjacent to a known beaver location to warrant consideration. Habitat connectivity, catchment context, field signs and the nature of the proposed works all contribute to determining whether further assessment is necessary.

Beavers have already returned to parts of the capital through managed reintroduction projects.

Beavers were reintroduced to Enfield in 2022, with the project centred around an enclosure near Forty Hall. The project has subsequently expanded and the beavers have successfully bred.

In October 2023, a family of Eurasian beavers was introduced to Paradise Fields in Ealing, returning the species to west London after an absence of around 400 years.

The Ealing project provides a particularly relevant example of how beavers can occupy an urban landscape. The site includes wetland habitat within Greenford and demonstrates that highly urbanised surroundings do not necessarily exclude suitable beaver habitat.

Further reintroduction is also being explored within London, meaning the geographical relevance of beavers to development and planning may continue to change.

For developers, architects and planning professionals, this makes early consideration of suitable freshwater habitat increasingly important when determining whether protected species assessment is necessary.

Unlike some areas of England where wild beavers are already established or licensed releases are underway, current information from the Wildlife Trust for Lancashire, Manchester and North Merseyside states that beavers are presently absent from the region.

Any future wild release would require appropriate licensing, feasibility assessment, landowner and stakeholder engagement, and arrangements for long term monitoring and management.

For Merseyside development projects, this distinction is important.

A Beaver Survey should not be recommended simply because a site contains a river or wetland. Current ecological records, habitat suitability, catchment context and the nature of the proposed works should first be considered to determine whether further assessment is justified.

However, beaver distribution and restoration in England are changing. Sites with suitable freshwater habitat should therefore be assessed using current ecological information where protected species considerations arise during planning.

This approach avoids unnecessary surveys while ensuring emerging ecological constraints are identified appropriately.

Worcestershire's river valleys form a significant part of the county's ecological network. The extensive floodplains associated with the Rivers Severn and Avon include floodplain meadows, reedbeds, wet woodland, ditches and mature willow habitat.

The Stour Valley also contains important wetland, fen and mire habitats, while the Salwarpe Valley includes wetlands and historic mill pond systems. The River Teme is particularly notable because it is Worcestershire's only river designated as a Site of Special Scientific Interest. This combination of major rivers, tributaries, floodplains and connected wetland habitats means freshwater ecology can be an important consideration for development across the county.

For Beaver Surveys, however, suitable habitat alone does not confirm beaver presence or mean that a survey will automatically be required. Current ecological evidence and the potential impacts of the proposed development remain central to determining the information required for planning.

Wild beavers are already present within some rivers and wetlands in Wiltshire. Wiltshire Wildlife Trust has confirmed their presence and is increasing monitoring of beavers on local waterways to better understand their distribution and impacts.

The Trust does not currently have plans to undertake its own beaver reintroduction or release project within the county, meaning existing wild activity should be distinguished from a formal local release programme.

For planning and development, this makes current ecological information particularly important.

Beavers can be difficult to detect and their distribution can change as animals move through connected river systems. Development affecting suitable freshwater and riparian habitat should therefore be considered in the context of available records, field evidence and the potential impacts of the proposed works.

Where further ecological information is requested by the LPA, an appropriate Beaver Survey can establish how a site is being used and identify any protected features that need to be considered within the development.

Wild beavers are already living within the waterways of the wider Avon area. Sightings of Eurasian beavers on the River Avon began to be reported in 2021, and subsequent monitoring has provided evidence of a wild living population within the region. Beavers have since been recorded at multiple locations within the Bristol Avon and Somerset Frome catchments, demonstrating that they are already moving through and using the wider freshwater network.

Unlike a planned reintroduction project, the origins of these beavers are uncertain. However, their established presence means beaver ecology is now a genuine consideration for appropriate development sites within the wider catchment. Monitoring and management of the population are continuing as its distribution becomes better understood. For developments affecting suitable freshwater habitat, current ecological records and site specific evidence are therefore particularly important.

Where the LPA requests further information relating to beavers, an appropriate survey can establish how a site is being used and identify any protected features that need to be considered as part of the development.