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What’s the difference between an SSSI, a SNCI and an AONB?
There are plenty of acronyms all over the countryside and in wildlife literature, but what are they and what do they actually mean?
How could they affect your green adventures closer to home - and which are the best for wildlife, best for families or best avoided!
Well, I have found out about the main contenders in the UK - and details of what they are about:
NP - National Park
These are large areas of the country that have been chosen to be preserved and improved for the enjoyment of people and for the safety of local plants and wildlife - or ways of living/heritage.
Most of the land within National Parks is privately owned and so there are certain areas that cannot be visited by tourists - and this can also lead to conflict with local businesses and excessive congestion in the ‘best’ places.
Parts of a National Park can also be designated as any of the following as well, for example the South Downs National Park is dotted with SSSI’s and smaller Nature Reserves.
SSSI - Site of Special Scientific Interest
This is the name given to areas in the UK that have special features which need to be protected, and fall into either biological SSSI (mainly habitats like peat bogs and cliffs) or geological SSSI’s (which have been chosen to represent a specific geological or visible feature of a landscape specific to the UK).

Pulborough Brooks - Sussex - SSSI Nature Reserve
They do not need to be on public land, and in fact many are in private hands and cannot be visited by the public, however National Charities and Organisations like the RSPB and Wildlife Trusts run them as Nature Reserves.
The SSSI’s do not need to a beautiful places to visit - they just contain certain elements or are in certain locations that should be protected. They could just be an old field by the side of the road!
AONB - Areas of Outstanding Natural Beauty
Only covering abut 10% of land in the UK, these areas are given special protection with regards to development and housing - so that the areas cannot be destroyed or divided by roads and buildings.
These Areas are normally smaller than National Parks and are more or less places to roam freely.
NR - Nature Reserves
These are totally different from National Parks as they are specifically run to protect and preserve the habitat and wildlife - rather than as places for people - although many are open to the public.
They can be either a National NR (NNR) and ‘run by Natural England, or they can be a Local NR (LNR) and run by non-government groups or private owners. They could also be Marine Nature Reserves (MNR) a and protect the coastal edges or the UK.
It is often created in an area where a particular species of plant or animal is endangered, and so by protecting the area and restricting access and development, the species may survive and thrive.
CA - Conservation Area
These areas do exactly what they say - they are created to protect a species or landscape that would otherwise be lost to development. They are usually quite small and are part of or all of a LNR.
They tend to have a variety of names as they are run by the county, so a Site of Nature Conservation Importance (SNCI) is virtually the same as a Site of Importance for Nature Conservation (SINC)
CP - Country Parks
These are just areas of the countryside that have been set aside for human pleasure - with no particular interest in conservation.
They are usually large areas of managed woodland and open space with extensive and well marked trails for people on foot, on horseback and more recently on mountain bikes.
The park may well have a campsite and other facilities (cafe/shop/toilets/play park) on site, and there may well be a charge for the car park!
So, now you can plan your trip to better suit your needs - and you will know what to expect when you get there…….