I know that one of the most difficult things in deciphering American vs British recipes can be the measurements. I hope the following conversions will be helpful to you. If you cook a lot of British recipes, a scale will be an invaluable tool to add to your kitchen.
Temperature
100 C = 212 F
110 C = 225 F
130 C = 250 F = Gas 1/2
140 C = 275 F = Gas 1
150 C = 300 F = Gas 2
170 C = 325 F = Gas 3
180 C = 350 F = Gas 4
190 C = 375 F = Gas 5
200 C = 400 F = Gas 6
220 C = 425 F = Gas 7
230 C = 450 F = Gas 8
240 C = 475 F = Gas 9
Weights
10g = 1/2 oz
20g = 3/4 oz
25g = 1 oz
50g = 2 oz
100g = 3 oz
150g = 5 oz
250g = 6 oz
300g = 10 oz
400g = 14 oz
450g = 1 lb
500g = 1lb 2 oz
Butter, Shortening, Cheese and Other Fats
1 tbsp = 1/8 stick = 1/2 oz = 15g
2 tbsp = 1/4 stick = 1 oz = 30g
4 tbsp = 1/2 stick = 2 oz = 60g = 1/4 cup
8 tbsp = 1 stick = 4 oz = 115g = 1/2 cup
16 tbsp = 2 sticks = 8 oz = 225g = 1 cup
32 tbsp = 4 sticks = 16 oz = 45og = 2 cups
Flour (unsifted)
1 tbsp = 1/4 oz = 8.75g
4 tbsp = 1 1/4 oz = 35g = 1/4 cup
5 tbsp = 1 1/2 oz = 45g = 1/3 cup
= 2 1/2 oz = 70g = 2/3 cup
= 3 1/2 oz = 90g = 3/4 cup
= 5 oz = 140g = 1 cup
Granulated Sugar
1 tsp = 1/6 oz = 5 g
1 tbsp = 1/2 oz = 15g
4 tbsp = 1 3/4 oz = 45g = 1/4 cup
5 tbsp = 2 1/4 oz = 75g = 1/3 cup
= 3 1/2 oz = 100g = 1/2 cup
= 7 oz = 200g = 1 cup
Other Equivalents
Breadcrumbs
Dry: 3/4 cup = 4 oz = 115g
Fresh: 2 cups = 4 oz = 115g
Brown Sugar: 1 1/2 cups = 1 lb = 450g
Confectioners' or Icing Sugar: 4 cups = 1 lb = 450g
Egg Whites: 1 = 2 tbsp and 8 = 1 cup
Egg Yolks: 1 = 1 tbsp and 16 = 1 cup
Nuts
Chopped: 3/4 cup = 4 oz = 115g
Ground: 1 cup loosely packed = 4 oz = 115g
Vegetables:
Sliced Carrots and other roots: 3 cups = 1 lb = 450g
Puréed Carrots and other roots: 1 1/3 cups = 1 lb = 450g
Onions, sliced: 1 1/3 cups = 1 lb = 450g
Potatoes, raw, sliced or chopped: 3 cups = 1 lb = 450g
Spinach: 1 1/2 cups = 1 lb = 45og
Ounces to grams: multiply by 28.35
Teaspoons to milliliters: multiply by 5
Tablespoons to milliliters: multiply by 15
Fluid ounces to millilitres: multiply by 0.24
Cups to litres: multiply by 0.24
Fahrenheit to Celsius: subtract 32, multiply by 5 and divide by 9
COOKING TERMS
I hope this will be a fairly comprehensive list of British cooking terms and their equivalents. If you find any I've missed, let me know and I'll add them to the list
I also recommend
www.foodsubs.com as an excellent resource when it comes to finding substitutes.
British terms are on the left and American terms on the right.
A
aubergine = eggplant
ale = a beer stronger than most lagers sold in the U.S.
B
bap = a bun, similar to what you'd use for a hamburger but bigger and also used for sandwiches
bangers = sausage (when used in bangers & mash you want a nice, thick, meaty one)
beetroot = beet
bicarbonate of soda = baking soda
biscuit = cracker or cookie
braising steak = chuck steak
broad bean = fava bean
bully beef = corned beef
C
candy floss = cotton candy
caster sugar = superfine granulated (to make your own, whizz regular granulated in a blender for a minute)
chicory = endive
chipolata = small pork sausage
chips = french fries
cling film = plastic wrap
collops = meatballs
coriander leaves = cilantro
corn flour = corn starch
cos = romaine lettuce
courgette = a small zucchini (nothing like the size of zucchinis that are often grown in U.S. gardens)
crisps = potato chips
D
demerara = sugar light brown cane sugar
desiccated coconut = shredded coconut
devonshire dream = a particular type of clotted cream
digestive biscuits = similar to graham crackers
double cream = heavy cream
E
endive = chicory
essence = extract
F
fairy cake = cupcake
finnan haddie = smoked haddock
french bean = green bean
G
gammon = ham (a cooked joint that is eaten hot, often with pineapple)
glacé = candied
golden syrup = similar to light corn syrup
greaseproof paper = wax paper
grill = broil
griller = broiler
H
ham = bought cold and thinly sliced
hob = stovetop
hundreds and thousands = sprinkles
I
icing sugar = confectioners' sugar
J
jacket potato = baked potato
jelly = jello
K
king prawns = jumbo shrimp
M
mangetout = snow peas
marmite = a brand name for a yeast extract that Brits love to spread on their toast. You will either love it or hate it. Marmite can also be a flavouring on things like Twiglets, a type of snack food.
marrow = squash that looks like a giant zucchini
mince = ground meat
N
neeps = mashed turnips (the yellow kind, rutebega)
O
offal = variety meats (liver, heart, kidney)
P
pine kernels = pine nuts
pips = seeds
prawns = a large shrimp
pudding = dessert
pudding rice = used specifically for desserts like rice pudding, short-grained, arborio may make an acceptable substitute
punnet = basket, as in strawberries or blueberries, usually a pint in America
R
rasher = slice (most often used in terms of bacon)
rocket = argula
S
self raising flour = all-purpose flour with baking powder
shandy = beer with lemonade
sharon fruit = persimmon
sherbet = powdered candy
silverside = beef cut from the rump
silver beet = swiss chard
single cream = light cream
spring onion = scallion/green onion
squash = liquid concentrate, which makes a fruity drink when diluted (kind of like koolaid)
stoned = seeded
strong flour = bread flour or hard-wheat flour
sultanas = golden raisins
swede = yellow turnip (rutebega)
swiss roll tin = jelly roll pan
T
tatties = potatoes
treacle = similar to molasses
W
wholemeal flour = wholewheat flour
Sylvie here to edit:
Sackville made this wonderful list of different British cookbooks owned by some of us, which I didn't want to get lost when the topic got 'un-stickied', so I thought I'd paste it in here for safekeeping..........
This is a list of books on British cookery owned by Zaar members. We'll never get time to post all the recipes in them, but if you think a recipe you'd like might be found in one of these, then please let us know.
Likewise, if you have some books and wouldn't mind being a resource for others on Zaar, please get in contact with me and I'll list your books here.
It's divided into categories, with general British cookery at the top, followed by books on specific regions and finally those which may not focus on British cooking but are written by British chefs at the bottom.
GENERAL BRITISH COOKBOOKS

Simply British by Sybil Kapoor -- owned by
Sackville Girl

British Cooking from the Time Life collection -- owned by
Sackville Girl

Royal Cookery Book by Mrs McKee (a book written by a former cook to The Queen and The Queen Mother) -- owned by
Sackville Girl

Century of British Cooking by Marguerite Patten -- owned by
Sackville Girl

British Recipes, The Traditional Dishes of England, Scotland, Ireland & Wales compiled and edited by Countess Morphy (1936) -- owned by
Kookaburra

The World Encyclopedia of Bread by Christine Ingram and Jennie Shapter -- owned by
Kookaburra

McDougall's Cookbook (flour) -- owned by
Hels

The Dairy Book of Home Cookery 1977 -- owned by
Hels

The Pooh Cookbook by Katie Stewart -- owned by
Hels

The Usborne First Cookbook -- owned by
Hels

Nanny Ogg's Cookbook by Terry Pratchett and Stephen Briggs -- owned by
Hels

Early Settlers' Household Lore, compiled by Mrs. N. Pescott (from Sovereign Hill Historical Village, Ballarat) - recipes from the Victorian (Australian) goldfields of the 1850s (mostly British recipes) -- owned by
Kookaburra

Simple Ways to Success - British; by Mark Hix -- owned by
Sylvie77

Farmhouse Kitchen II -- owned by
Sylvie77
ENGLISH COOKBOOKS

English Food by Jane Grigson -- owned by
Sackville Girl and
Sherrie-Pie

Devonshire Flavour compiled by Elizabeth Lothian -- owned by
Kookaburra
IRISH COOKBOOKS

Traditional Cooking by Darina Allen -- owned by
Sackville Girl
SCOTTISH COOKBOOKS

Scottish Regional Recipes by Catherine Brown -- owned by
Sackville Girl
BRITISH CHEFS
Lindsay Bareham

A Celebration of Soup by Lindsay Bareham -- owned by
Sherrie-Pie

Roast Chicken and other stories by Lindsay Bareham and Simon Hopkinson -- owned by
Sherrie-Pie and
Marie Alice
Mary Berry

Mary Berry's Complete Cookbook -- owned by
Hels

Mary Berry's Ultimate Cake Book -- owned by
Marie Alice
Frances Bissell

The Organic Meat Cookbook by Frances Bissell -- owned by
Elizabeth David

French Country Cooking by Elizabeth David -- owned by
Sackville Girl

Summer Cooking by Elizabeth David -- -- owned by
Sackville Girl and
Sherrie-Pie
Rose Elliott

Vegetarian Cookery by Rose Elliot -- owned by
Hugh Fearnley-Whittingstall

The River Cottage Meat Book by Hugh Fearnley-Whittingstall -- owned by
Sackville Girl

The River Cottage Cookbook; by Hugh Fernley-Whittingstall -- owned by
Sylvie77
Rose Gray

River Cafe Cookbook Green by Rose Gray and Ruth Rogers -- owned by
Sackville Girl

River Cafe Cook Book Two, by Rose Gray and Ruth Rogers -- owned by
Lennie
Jane Grigson

Good Things by Jane Grigson -- owned by
Anisel

The Mushroom Feast by Jane Grigson -- owned by
Anisel

The Vegetable Book by Jane Grigson -- owned by
Anisel

Fish Cookery by Jane Grigson -- owned by
Anisel
Sophie Grigson

Sophie Grigson: Sophie Grigson's Country Kitchen -- owned by
Marie Alice
Alastair Hendy

Cooking for Friends by Alastair Hendy -- owned by
Kookaburra
Madhur Jaffrey

Ultimate Curry Bible by Madhur Jaffrey -- owned by
Sackville Girl

Flavours of India by Madhur Jaffrey -- owned by
Marie Alice

Indian Cookery by Madhur Jaffrey -- owned by
Marie Alice
Nigella Lawson

Nigella Bites by Nigella Lawson -- owned by
Sackville Girl and
Marie Alice

How to Eat by Nigella Lawson -- owned by
Sackville Girl

How to be a Domestic Goddess by Nigella Lawson -- owned by
Lennie and
Marie Alice

Feast by Nigella Lawson -- owned by
Marie Alice
Kenneth Lo

The Wok Cookbook by Kenneth Lo -- owned by
Hels
Linda McCartney

Linda Mc Cartney on Tour - Vegetarian Recipes From Around the World -- owned by
Sylvie77
Nick Nairn

Nick Nairn: 100 Chicken Recipes -- owned by
Marie Alice
Jamie Oliver

Happy Days with the Naked Chef by Jamie Oliver -- owned by
Kookaburra
and
Sackville Girl

The Return of the Naked Chef by Jamie Oliver -- owned by
Sackville Girl
Gordon Ramsay

Kitchen Heaven by Gordon Ramsay -- owned by
Sackville Girl
Gary Rhodes

Gary Rhodes: New British Classics, Spring Into Summer, Fall Into Winter -- owned by
Marie Alice
Delia Smith

Delia Smith's Complete Cookery Course, Classic Edition -- owned by
Kookaburra

How to Cook, Book One by Delia Smith -- owned by
Kookaburra and
Marie Alice

How to Cook, Book Two by Delia Smith -- owned by
Kookaburra and
Marie Alice

How to Cook, Book Three by Delia Smith -- owned by
Marie Alice

The Delia Collection (Books: Pork, Italian, Fish, Chocolate, Chicken and Soup) -- owned by
Marie Alice

Delia Smith's Vegetarian Collection -- owned by
Marie Alice

Delia Smith's Summer Collection -- owned by
Marie Alice

Delia Smith's Winter Collection -- owned by
Kookaburra and
Marie Alice

Delia Smith's Christmas -- owned by
Lennie and
Marie Alice
Nigel Slater

Real Fast Food by Nigel Slater -- owned by
Marie Alice and
Sherrie-Pie

Real Fast Puddings by Nigel Slater -- owned by
Sherrie-Pie
Rick Stein

English Seafood Cookery by Rick Stein -- owned by
Sherrie-Pie
Caroline Waldegrave

Leith's Easy Dinner Parties by Caroline Waldegrave, Puff Fairclough and Janey Orr -- owned by
Sackville Girl