| SM1 | Zostera communities |
| SM2 | Ruppia maritima salt-marsh community |
| SM3 | Eleocharis parvula salt-marsh community |
| SM4 | Spartina maritima salt-marsh community |
| SM5 | Spartina alterniflora salt-marsh community |
| SM6 | Spartina anglica salt-marsh community |
| SM7 | Arthrocnemum perenne stands |
| SM8 | Annual Salicornia salt-marsh community |
| SM9 | Suaeda maritima salt-marsh community |
| SM10 | Transitional low-marsh vegetation with Puccinellia maritima annual Salicornia species and Suaeda maritima |
| SM11 | Aster tripolium var. discoideus salt-marsh community |
| SM12 | Rayed Aster Tripolium on slat marshes |
| SM13 | Puccinellia maritima salt-marsh community |
| SM14 | Halimione portulacoides salt-marsh community |
| SM15 | Juncus maritimus-Triglochin maritima salt-marsh community |
| SM16 | Festuca rubra salt-marsh community |
| SM17 | Artemisia maritima salt-marsh community |
| SM18 | Juncus maritimus salt-marsh community |
| SM19 | Blysmus rufus salt-marsh community |
| SM20 | Eleocharis uniglumis salt-marsh community |
| SM21 | Suaeda vera-Limonium binervosum salt-marsh community |
| SM22 | Halimione portulacoides-Frankenia laevis salt-marsh community |
| SM23 | Spergularia marina-Puccinellia distans salt-marsh community |
| SM24 | Elymus pycnanthus salt-marsh community |
| SM25 | Suaeda vera drift-line community |
| SM26 | Inula crithmoides stands |
| SM28 | Elymus repens salt-marsh community |
The NVC divides communities broadly acccording to habitat, using a letter shorthand to indicate the general habitat type:
- A = water,
- CG = calcareous grassland,
- H = heath,
- M = mire,
- MC = maritime cliff,
- MG = mesotrophic grassland (moderately fertile soil),
- OV = open vegetation,
- S = swamp,
- SD = sand dune,
- SM = salt marsh,
- U = upland, and
- W = wood.
There are 286 communities that are listed here. Sub-communities have not been included. JNCC 2017.