Aimaz/Bog

U	Non-U	Aimaz says...
Bike or Bicycle	Cycle	Bike
Dinner Jacket	Dress Suit	eh?
Knave	Jack (cards)	jack
Vegetables	Greens	vedge
Ice	Ice Cream	ice cream
Scent	Perfume	perfume
They've a very nice house.	They have a lovely home.	nice gaff guv'nor. (seriously, "nice house")
Ill (in bed)	Sick (in bed)	both interchangably
I was sick on the boat.	I was ill on the boat.	sick
Looking-Glass	Mirror	mirror
Chimneypiece	Fireplace	fireplace
Graveyard	Cemetery	cemetery
Spectacles	Glasses	glasses or specs (not spectacles)
False Teeth	Dentures	dentures
Die	Pass on	anything from the monty python parrot sketch.
Mad	Mental	both probably "mental" more than "mad", cos "mad" means "angry"
Jam	Preserve	depends whether it is jam or preserve...
Napkin	Serviette	dunno, probably napkin
Sofa	Settee or Couch	settee (not "couch" sounds too american)
Lavatory or Loo	Toilet	toilet or "bog"
Rich	Wealthy	rich or "loaded"
What?	Pardon?	pardon (or "say again")
Good health	Cheers	cheers
Lunch	Dinner (for midday meal)	lunch
Pudding	Sweet	pudding
Drawing-room	Lounge	wtf is a drawing room? lounge or "front room"
Writing-paper	Note-paper	computer
How d'you do?	Pleased to meet you	sup, y'alright, 'ow're you doin'?
(School)master, mistress	Teacher	teacher