| OV18 | Polygonum aviculare-Chamomilla suaveolens community |
| OV19 | Poa annua-Matricaria perforata community |
| OV20 | Poa annua-Sagina procumbens community |
| OV21 | Poa annua-Plantago major community |
| OV22 | Poa annua-Taraxacum officinale community |
| OV23 | Lolium perenne-Dactylis glomerata 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.