Royal bluebell 
Sheeps bit scabious 
Siphocampylus matthiaei 
Siphocampylus reticulatus 
Southern Harebell 
Southern Rockbell 
Spicate Venus'-Looking-Glass 
Spiked lobelia 
Spiked rampion 
Spreading Bellflower 
Star of Bethlehem 
Swamp isotome 
Tall lobelia 
Tongue-shaped bellflower 
Toothed calicoflower 
Toothed Lobelia 
Trailing Bellflower 
Tufted Horned Rampion 
Tussock Bellflower 
Venus' Looking-glass 
Wall Bellflower 
White root 
Wide-leaved bellflower 
Woodbridge poison