Amphetamine:
* Billy - generally Amphetamine Sulphate
* Dexies - from the brand name Dexedrine or the chemical name Dexamphetamine sulphate,
* Speed - generally Amphetamine Sulphate
* Whiz - generally Amphetamine Sulphate

Anabolic steroids:
* Iron Brew - steroids such as Durabolin, Stanozolol, Dianabol; this should not be confused with the soft drink Irn Bru.

Amyl nitrite:
* Animal - play on 'Amyl'
* Liquid gold - descriptive
* Poppers - may be any of Amyl nitrite, Alkyl nitrites, or Butyl nitrite

Benzodiazepines:
* Bennies - generic street name for Benzodiazepines
* Downers - generic street name for Benzodiazepines

Nitrazepam:
* Forget-me-pill - chemical name Flunitrazepam
* Jellies - chemical name Temazepam
* La roche - chemical name Flunitrazepam
* Mexican valium - chemical name Flunitrazepam
* Moggies - brand names: Mogodon, Nitrados, Remnos, Unisomnia, chemical name *Roofies - chemical name Flunitrazepam
* Rophies - chemical name Flunitrazepam
* Ropies - chemical name Flunitrazepam
* Ruffies - chemical name Flunitrazepam
* Roche - chemical name Flunitrazepam
* Roachies - chemical name Flunitrazepam
* R-2 - chemical name Flunitrazepam
* Rope - chemical name Flunitrazepam
* Rib - chemical name Flunitrazepam
* Rugby balls - chemical name Temazepam
* Terms - chemical name Temazepam
* Vallies - brand name Valium, chemical name Diazepam.

Cannabis:
* Al green
* Bammer
* Black
* Blaze
* Blow
* Blowhead
* Bomb
* Bud
* Buddha
* Cheeba
* Cron
* Chronic
* Daddy
* Dank
* Doob
* Dope
* Doshia
* Draw
* Ganja
* Gerp
* Gran
* Grass
* Hash
* Herb
* Ish
* Kilroy
* La-lala
* Mary Jane
* Nugenz
* Nugs
* Old Toby
* Perp
* Pot
* Puff
* Shit
* Skunk
* Smoke
* Stash
* Strees
* Trees
* Tweed
* Wacky tabaccy
* Weed
* Yaa
* Yameen

Cocaine:
* Blow
* Booger sugar
* Charlie
* Coke - shortened form of cocaine
* Snow - cocaine as a powder is said to resemble snow
* Powder - self descriptive
* White lady
* Yayo - From Scarface Chichi, get the yayo
* Shnazzle

Crack cocaine:
* Crack - from the noise it makes when it is smoked
* Freebase - technically the description of an action of taking crack cocaine, but also used as a name for the drug
* Rocks - descriptive

LSD:
* Acid
* Acid tabs
* Tabs - LSD is sometimes blotted onto sheets of paper, cut up into little squares called tabs
* Trips - note than an LSD experience is known as a trip; being on LSD is known as tripping
* Trade names - e.g. Strawberries; tabs are often illustrated, and specific batches named after the illustration or colour of paper used.

MDMA:
* Ecstacy
* Dennis the Menace - capsules with red and black stripes, from the children's comic character Dennis the Menace who wore a red and black striped top
* Doves - some tablets are white and stamped with a dove shape
* E - shortened version of Ecstasy
* Love hearts
* M25s - named after a story that early MDMA tablets were produced in a utility vehicle driving round the M25 motorway
* Mitzies - shortened version of Mitsubishi: the company logo is stamped on the tablets
* Molly - pure version of MDMA
* Pills - common street name in the UK, because MDMA is most commonly found in pill form
* Roobarb and custard - characters from the children's TV series Roobarb
* Other brand names such as Speckled Doves, New Yorkers, Mercedes, etc.

Heroin:
* Dragon - when smoked, the thick smoke of heroin is said to resemble the tail of a dragon (hence 'chasing the dragon')
* Golden brown - from the colour of heroin
* H - shortened form of heroin
* Horse
* Smack - from the action of smacking the arm to produce a vein in which to inject the drug
* Hop
* Dog Food
* Goop
* Kaka Water
* Bobby Brown
* Noddy Brown
* Black
* China White
* Boy
* Peper
* Tar
* Dookey Rocks

Ketamine:
* K - shortened form of ketamine
* Special K - from the breakfast cereal of the same name
* Vitamin K
* Cat Tranquiliser - from it's use as a veterinary anesthetic

Khat:
* Chat
* Qat
* Quaadka

Methadone:
* Meth
* Phy - from Physeptone, a brand name for methadone

Methamphetamine:
* Crystal - from the crystalline form of pure methamphetamine
* Crystal meth
* Ice - from the appearance of crystalline methamphetamine, resembling ice.
* Meth
* Speed - applicable also to any stimulants of the amphetamine class
* Tina
* Crank - non-crystalline methamphetamine powder prepared for insufflation or injection
* Gak - see above

Other Opiates:
* Dikes - from Diconal a brand name for Dipipanone and cyclizine
* Dikies - from Diconal a brand name for Dipipanone and cyclizine
* DFs - from DF118, a brand name of the chemical Dihydrocodeine
* Diffs - brand name DHC Continus, chemical name Dihydrocodeine
* Hillbilly Heroin - Oxycodone
* Tems - brand name Temgesic, chemical name Buprenorphine
* Nubian - Nalbuphine hydrochloride

Phencyclidine:
* PCP
* Angel dust
* Dust
* Sherm

Psilocybin:
* Magic mushrooms
* Mushies
* Shrooms
* Boomers
* Fungus
* Fun Gus
* Gus