As angry as a bear with a sore head.
As black as coal.
As brave as a lion
As bright as day
As busy as a bee
As clever as a fox.
As cold as ice.
As dark as night
As dead as a doornail.
As fit as a butcher's dog
As fit as a fiddle.
As good as gold.
As happy as a kid with a new toy.
As hard as stone.
As high as a kite.
As light as a feather.
As long as a baker's round
As miserable as sin.
As nice as pie.
As old as the hills.
As pleased as a dog with a bone.
As pleased as punch.
As pretty as a picture.
As pure as snow.
As quick as a flash.
As red as a beetroot.
As right as rain.
As slippery as a snake/fish
As strong as an ox.
As sure as eggs is eggs (!!)
As thin as a rake.
As white as snow.
Cry like a baby
Eat like a pig
Laugh like a drain
Run like the wind
Sing like a nightingale
Smile like a Cheshire cat
Smoke like a chimney
Spread like wildfire
Stick like glue
Swear/curse like a trooper