TEXT: SPEAKING THE QUEEN’S ENGLISH
  1
  One of the biggest questions for a GM of a FIREBORN
  campaign is not “How did the mythic age really end?”
  or “How deeply do the Dwellers’ tendrils of influence
  reach into British government?” but rather, “Should my
  campaign encourage the use of British accents?”
  While some FIREBORN players will be blessed with a
  British upbringing, the majority of us are at a disadvan-
  tage when it comes to speaking like a Brit or, more pre-
  cisely, like a Londoner. You should probably encourage
  your players to try out the accent, and if it feels too silly
  or they can’t wrap their brains around it, let them switch
  to whatever their normal manner of speaking might be.
  For your NPCs, it’s really a matter of how effectively
  you think you can pull off a good brogue. The biggest
  advantage you have is that, even if your accent is atro-
  cious, most of the players probably won’t know what a
  “good” accent sounds like any more than you do.
  Regardless of your attempts to master the accent, it
  always helps set the mood to try to use the proper lingo.
  That’s why we’ve included this sampling of British slang.
  RHYMING SLANG
  One of the unique aspects of British slang is referred
  to as rhyming slang. It is a fairly convoluted form of
  slang, and it makes meaning nearly impossible to trace
  back unless you happen to be “in the know.” Rhyming
  slang replaces one word with an (often random) two-
  word phrase or compound word that rhymes; the actual
  rhyming half of the phrase or compound word is then
  removed, leaving one with an apparently unrelated slang
  term standing in for the original word. A common exam-
  ple of this is the rhyming slang for ‘mate,’ which is
  ‘china plate.’ The ‘plate’ half is removed, leaving
  ‘china’ as the slang term that is used. So ‘china’ means
  ‘mate’ by way of ‘china plate.’
  SPEAKING THE QUEEN’S ENGLISH
  aggro — short for aggravation or violence, e.g. “He
  was completely pissed and well up for some aggro.”
  apples and pears — stairs, e.g., “the body bounced
  all the way down the apples and pears.”
  arseholed — drunk, e.g. “Me an’ Dave got totally
  arseholed last night.”
  backhander — a payment given, usually for dubious
  purposes or illegally. 
  banged up — to be put in prison, e.g. “Did you hear,
  Benny got banged up last week after that blag.”
  bell — a telephone call, e.g. “give us a bell later.”
  bird
  —
  woman/girl/girlfriend; also from the
  rhyming slang ‘birdlime,’ ‘time,’ referring to a prison
  sentence, e.g. “He’s doing ‘is bird in Belmarsh.” 
  blag — robbery.
  bloke — general term for a man of unknown name,
  e.g. “Look at that bloke over there.”
  bollocks — bullshit, impossible, a lie.
  bong — an impossibly hopeless situation, a catastro-
  phe; an acronym for “bollocks, no good”
  bottle — courage, balls, e.g. “he lost his bottle,” “he
  bottled out,” “he’s got a lot of bottle.”
  bread — money. From the rhyming slang ‘bread and
  honey.’
  brew — a cup of tea or sometimes a pint of beer, e.g.
  “Do you fancy a brew?”
  brilliant — good, well-done, amazing, not necessar-
  ily having to do with intelligence, e.g., “That film was
  brilliant!” in reference to an action blockbuster.
  bugger — a form of abuse or an exclamation, e.g.
  “You little bugger!” Other forms are:
  bugger-all — nothing at all, e.g. “I’ve got bugger-
  all money left.”
  bugger-off — to tell someone to go away or to 
  leave quickly.
  cakehole — mouth, e.g. “Shut your cakehole!”
  charlie — slang for cocaine.
  chief — general respectful term used to address a
  man, particularly a superior.
  china — rhyming slang, short for ‘china plate,’
  ‘mate.’ Used to address someone who is at least slightly
  familiar and typically prefixed by “me old.” e.g.
  “Awright me old china!”
  clobber — clothes, e.g. “I’ve gotta go shopping for
  some new clobber.”
  cor! — an expression of surprise.
  cor blimey! — a variaton of ‘gaw blimey’. 
  damage — cost, e.g. “what’s the damage?”
  diamond geezer — a good, solid, reliable person.
  dodgy — something or someone seems off, or that
  shouldn’t be trusted.
  earner — a source of income (not usually honest),
  sometimes prefixed with “a nice little.”
  (the) firm — a gang of “dodgy geezers.”
  fag — cigarette.
  footie — abbreviated form of football (soccer).
  gaff — a house, e.g. “I’ll meet you round my gaff in
  half an hour,” or place, e.g. “She was all over the gaff”
  (all over the place).
  gander — to look at, e.g. “lets ‘ave a gander.”
  gaw blimey! — a corruption of the expression of sur-
  prise ‘God blind me!’
  geezer — a common term for a man. Used respect-
  fully and for a person of unknown name, e.g. “some
  geezer” or to say that someone is a bit of a laddish
  LEXICON OF BRITISH SLANG
  
  SPEAKING THE QUEEN’S ENGLISH
  2
  rogue, e.g. “he’s a bit of a geezer.” Also “dodgy geezer”
  can be used to describe a man of bad character.
  git — mildly offensive word to refer to someone (a
  male) that is disliked.
  go into one — to get annoyed or loose control, sim-
  ilar to “go off.”
  half inch — rhyming slang for ‘pinch,’ referring to
  stealing.
  Hampstead — rhyming slang, short for ‘Hampstead
  Heath,’ ‘teeth,’ e.g. “Look at the Hampsteads on that
  bird!”
  have some of that! — an exclamation used to
  express pleasure, usually after showing off at some-
  thing, e.g. “After pinning a fleeing thug to a door with a
  well thrown knife, Dave the Diamond Geezer
  exclaimed, ‘ave some of that!’”
  Herbert — a foolish person or used as a mild form
  of abuse. Normally prefixed by “spotty,” e.g. “Will ya
  look at that spotty Herbert!”
  inside — in prison, e.g. “I’ve ‘eard Will’s inside
  again.”
  jar — pint of beer, e.g. “Fancy a few jars after
  work?”
  John — used as a general term for a man whose
  name isn’t known, e.g. “Awright John, watcha doin’
  ‘ere?”
  kip — a nap, or to take a nap.
  knocking shop — a brothel.
  laugh — a joke.
  leave it out — a phrase meaning “stop doing that” or
  “stop saying that,” often used in disbelief or as if to say
  “you must be joking,” e.g. “Leave it out John! You’re
  ‘avin a laugh!”
  loaf — rhyming slang, short for ‘loaf of bread,’
  ‘head,’ e.g. “don’t be stupid, use yer loaf!”
  local — the local public house (pub or bar), e.g.
  “Yeah, I saw ‘im down the local last night.”
  manor — territory, area, turf. Usually associated
  with the criminal underground, e.g. “If I see you round
  my manor again you’re dead!”
  mate — common form of address for both friends
  and strangers of unknown name, e.g. “Awright mate!”
  Also used when the person being spoken to is very much
  not a mate, e.g. “Oi mate, you looking at my bird!?”
  merchant banker — rhyming slang for wanker.
  nick — to steal; when preceded by ‘the,’ refers to a
  police station or or prison, e.g. “He’s been banged-up in
  the nick . . . again!”
  not cricket — an old English saying. If something is
  not cricket, it means that “decent” people probably
  wouldn’t approve of it. Usually used by youth in a
  mocking manner.
  nutter — someone crazy or, more commonly, violent
  or foolishly daring, e.g. “You’d have to be a right nutter
  to start a fight in that place.” 
  oily — rhyming slang for ‘oily rag,’ ‘fag’ (cigarette).
  on the game — to be a prostitute, e.g., “She’s had to
  get on the game to pay the rent.”
  Pete Tong — rhyming slang for ‘wrong,’ e.g. “It’s all
  gone Pete Tong!”
  pissed — unlike the American version of the word
  (which means “annoyed”), this is the most common
  slang term for being drunk. Other variants are “pissed-
  up,” “pissed as arseholes,” “pissed as a fart,” “pissed as
  a newt,” etc.
  pub — short for public house, meaning a bar.
  (in) queer street — to be in trouble or in a difficult
  situation.
  right — total, completely, adamantly, e.g. “He’s a
  right bastard!”
  Rosa (or Rose) Lee — a cup of tea, e.g.  "cor blimey
  I could go for a cup of Rosa Lee.”
  (do a) runner — leave an area (often the scene of a
  crime) unexpectedly, e.g. “Where’s that bastard gone? I
  bet he’s done a runner!” 
  Scooby — rhyming slang for ‘Scooby-Do,’ ‘clue,’
  e.g. “I ‘avn’t a Scooby, mate.”
  shafted — to be treated badly, to be in trouble, e.g.
  “We’re right shafted if we don’t get out of this tunnel!”
  sheets — monetary notes.
  shrapnel — coins.
  solid — reliable, dependable, e.g. “You don’t have to
  worry about Colin, he’s a solid bloke.”
  sussed or sussed out — found out, discovered, e.g.
  “The coppers ‘ave sussed us, John!” or worked out all
  right, came together, e.g. “It all sussed out in the end.”
  taking a piss out — to fool, to play a joke at some-
  one’s expense, e.g., “Mason thought his mates were tak-
  ing a piss out on ‘im when they told him something was
  chasing them.”
  taters — rhyming slang for ‘potatoes in the mould,’
  ‘cold,’ e.g. “It’s taters out here, I need a new coat.”
  tea leaf — rhyming slang for thief, e.g. “He’s a right
  tea leaf, that one.” 
  tits-up — all gone wrong, e.g. “Aw shit, it’s all gone
  tits-up!”
  up for it — to be willing to have a good time or try
  something daring, e.g. “Are you up for it?” Also for
  someone (usually a woman) to be sexually available,
  e.g. “I reckon she’s up for it, Andrews! Go over an’ talk
  to her.”
  wanker — an insult.
  well ‘ard or hard — someone or something that is
  very tough, e.g. “She’s well ‘ard, I’ve ‘eard.”
  wind up — to tease, to irritate, e.g. “Are you wind-
  ing me up?”
  
SOURCE: textdata/thevault/Fireborn/Fireborn Speaking the Queen's English.pdf