These are some of the most common diving and dabbling ducks seen in the UK.

Dabbling ducks

Gadwall
Common Shelduck
Mallard (male)
Mallard (female)
Northern Shoveler (male)
Northern Shoveler (female)
Garganey
Teal
Wigeon
Pintail (male)

Diving ducks

Common Pochard
Goldeneye
Tufted Duck (male)
Tufted Duck (female)
Red-crested Pochard
Common Eider