Ampersand

Write out “and” at all times. Ampersands should never be used, even in tables, charts and graphs.

distribution, hotels and restaurants sector
HM Revenue and Customs (HMRC)

Ampersands do not simplify reading. A serial comma must be added instead.

distribution, hotels and restaurants, and transport, storage and communication sectors

Not

distribution, hotels & restaurants and transport, storage & communication sectors

Apostrophes

Only use apostrophes to show possession.

Please use Sarah’s statistics
Refer to last month’s data

Possession

The apostrophe shows that something is owned by someone. For example, the Statistician’s Office is the office owned by the Statistician. Depending on who is doing the owning, the apostrophe is used differently.

If the possessor is singular, use an apostrophe followed by “s”.

The report’s contents (contents belonging to the report)
The statistician’s opinion (opinion belonging to the statistician)

If the possessor is singular and ends in s, use an apostrophe followed by “s”.

James’s driving test
ONS’s web standards

If the possessor is plural and does not end in s, use an apostrophe followed by “s”.

The women’s average salary
The children’s ward

If the possessor is plural and ends in s, use an apostrophe after “s”.

The statistics’ source
The statisticians’ discussion

Contractions

Contractions should not be used. They are hard to read and are not accessible for all users, particularly those with learning difficulties or those who speak English as an additional language.

“We do not use this method on all surveys” not “We don’t use this method on all surveys”
“It is clear that no change has occurred” not “It’s clear that no change has occurred”

Brackets

Avoid using too many brackets in text and make sure they are always closed. If the whole statement is within brackets the final full stop should be inside them.

Use round brackets when adding supplementary information to the text.

The arithmetic was wrong (which is unheard of)
The Royal Society for the Protection of Animals (RSPCA)
(The Authority has the final say on these.)

Use square brackets when adding comments or corrections.

The judge stated: “You [Mr Sykes] have suffered.”
On Twitter she said: “The statistecs [sic] seemed wrong”

Avoid having two brackets next to each other. Use one set of brackets and a comma or semicolon to separate the information.

(up 22% to 79,117 offences; Figure 13)
…as shown in the data (Figure 12, Table A1)

Also try to avoid brackets within brackets unless it is an acronym that you need to provide.

…as shown in the data (Annual Business Survey (ABS))

Bullet points

We use bullet points in two different ways.

As a list within the text

Use bullet points to make text easier to read. Make sure that:

  • you always use a lead-in line
  • there is always a space between the lead-in line and the bullet points
  • the bullets make sense running on from the lead-in line
  • each bullet is short (no more than one sentence)
  • you use lower case at the start of the bullet point, unless it starts with a proper noun
  • you do not use full stops within bullet points – where possible start another bullet point or use commas, dashes or semicolons to expand
  • you do not put “or”, “and” after the bullet points
  • there is no punctuation at the end of bullet points
  • if you add links they appear within the text and not as the whole bullet point
  • there is no full stop after the last bullet point

Your list should have at least three bullet points. If you have fewer, rewrite your content as individual sentences or paragraphs.

For bullet points following a heading

There is no lead-in line and the bullet points follow on directly from a heading or subheading. Each bullet point:

  • starts with a capital letter
  • finishes with a full stop
  • is short (no more than one sentence)

Main points

  • There were 240,854 marriages in 2013, a decrease of 8.6% compared with 2012 and the first decline since 2009.
  • Civil ceremonies accounted for 72% of all marriages in 2013.

Colons

Use a colon to introduce an idea, list or quotation. The clause before the colon must be a full sentence. If not, do not use a colon.

An idea

Use the colon to introduce an idea that is an explanation or continuation of the one before the colon.

There is one thing you need to know about statistics: they are fascinating.

Start the explanation or continuation with a capital letter if it is a formal quote that is a full sentence, or more than one sentence.

There is one thing you need to know about statistics: They are fascinating and I do not know why anyone would think differently. Truly they have made my life better.

There is one thing you need to know about statistics: “A better thing has never been created,” said the Chief Statistician.

A list

Use a colon to introduce a list.

The statistics incorporate varied data: housing, schooling and population information.

Not

The statistics incorporate: housing, schooling and population information.

A quotation

Use a colon to introduce a quotation. The quotation should begin with a capital letter.

The judge stated: “You have suffered.”

Commas

There are three situations in which to use the comma.

A list

Use a comma to separate three or more items in a list.

For breakfast there are sausages, bacon, beans and tomato available.

The comma before “and” is usually removed. However, if the last two items in the list could merge together, it is better to separate them with a serial comma to avoid confusion. This is the only time it should be used.

My favourite ice cream flavours are strawberry, chocolate, banana, and toffee.

This shows that banana is a separate flavour to toffee, so people do not think it is “banana and toffee”.

To separate introductory parts

Use a comma to separate the introductory part of a sentence from the main part.

Despite his misgivings, the scientist felt the experiment went well.

Use a comma if the introductory part of the sentence changes the meaning.

Sadly, the numbers showed he had lost the election.

Use a comma if the introductory part of the sentence can merge into the sentence itself.

Inside, his heart was beating fast

Not

Inside his heart was beating fast

The comma can be left out if the introductory part of the sentence is very short and does not merge.

Soon the statistics will be on the website.

To separate asides in a sentence

Use a comma to separate anything that is not vital to understanding the meaning of the sentence. There should be a comma at the beginning of the aside and at the end.

The monthly death statistics, not always the most cheerful, were always informative.

Hyphens and dashes

A hyphen is the punctuation mark you should use to add clarity to some words.

An en-dash is longer than a hyphen, and we use it for specific purposes at the Office for National Statistics (ONS).

Hyphens

A hyphen is a symbol used to link words together.

Hyphens are used to clarify the meaning of different words, including prefixes and suffixes, when these are used together.

Joining words together

Use a hyphen to join words together to form a new word.

He liked his co-workers.

Use a hyphen to distinguish words from similar ones.

re-sort, not resort
co-op, not coop
re-form, not reform

Use a hyphen for all words with “e” before the word (as a prefix), except for “email”.

e-commerce
e-book
e-learning

Do not use hyphens for words with “re” as a prefix, unless the word afterwards begins with an “e”.

replay
rewrite
re-examine
re-evaluate

If you are unsure, check the word in the Cambridge Dictionary.

Compound modifiers

A compound modifier is two words that act as one adjective when joined by a hyphen.

Use hyphens in phrases where words have a combined meaning or a relationship.

a five-storey building
a well-explained report
the long-term effects

Do not use a hyphen when you use compound modifiers after the subject of the sentence.

a building with five storeys
a report that is well explained
the effects that are long term

If you are unsure, check if the two words are a compound modifier in the Cambridge Dictionary.

There are some exceptions to this rule.

Compound modifiers that do not need a hyphen are:

  • police recorded crime
  • civil rights movement
  • financial services sector
  • work inspection powers

Words that end in “ly”

Do not use hyphens after adverbs ending in “ly”.

a hotly disputed penalty
a constantly evolving newspaper
genetically modified food
statistically significant changes

Prefixes that do not need hyphens

The following prefixes do not need hyphens:

  • macro
  • mega
  • micro
  • mini
  • multi
  • over
  • super
  • under

macroeconomics
multimillionaire

En dashes

An en dash can be used:

  • to add extra information to a sentence
  • to break up a sentence
  • in a headline

It should always have spaces on either side.

To use the en dash in Microsoft Word, use “ctrl” and “-” (minus on the number keypad). Be aware that the minus sign and the hyphen are easily mistaken for each other. If this does not work, you can click on “insert” in the top panel menu, then “symbols”, then “more symbols”, then “special characters”, and then “en dash”.

These functions may not work if you are using the browser version of Microsoft Word, so we suggest using the desktop app.

Adding extra information

The en dash adds extra information that is not essential to the rest of the sentence but may be useful for the reader. Overusing en dashes in this way can make your content difficult to read.

The motive behind acquiring competitors – referred to as horizontal integration – can be to increase market share and product range.

Breaking a sentence

There are other ways to use an en dash to break a sentence where a comma, semicolon, or colon would be traditionally used.

There are some statistics on the website – they are fascinating.

Labelling sources

We use an en dash in our chart and table sources to separate the department or organisation, and the survey or publication name.

Office for National Statistics – House Price Index

Ellipsis

An ellipsis is a row of three full stops, used to show that words have been left out. How it looks depends on where it is in the sentence:

The beginning of a sentence

There should be no space between the ellipsis and the word.

…We are aware that each country is unique.

In the middle of a sentence

There should be single spaces before and after the ellipsis.

We are aware that each country … is unique.

The end of a sentence

There should be no space before it and no full stop.

We are aware that each country is unique…

If this is in a quotation, the sentence can be closed by a full stop after the quotation mark

“We are aware that each country is unique…”.

Exclamation mark

Exclamation marks are generally used to show emotion, commands and interjections. Do not use these unless quoting directly.

Full stops

Full stops are used to end sentences. Only use one space after them. Do not use them after initials, or in titles, abbreviations or acronyms. They also should not be used in any heading, subheading, title, date or name that occupies a line to itself.

If a sentence’s final clause is in brackets, and that clause ends in ? or !, then there must be a full stop outside the brackets. Full stops should also be used to end release calendar summaries as screen readers need this to stop reading.

Mr J A Rank
Miss
etc
BBC
“What do you think it is?”
We have terrible weather today (the thunder and lightning are terrifying!).

Question marks

Question marks are used to show the end of a question. The sentence after the question mark always begins with a capital letter.

Where have you put the release?

If it is used in the middle of a sentence, it is followed either by a word starting with a lower case letter or another punctuation mark, such as an en dash.

“Where now?”, they wonder.

A question mark is not needed after sentences framed as questions out of politeness or common usage:

May I take this opportunity to thank you for your contribution to this project

When a question takes the form of direct speech, the first letter should be capitalised and the whole question put in quotation marks:

“Why are there discrepancies in the count?” she asked

Quotation marks

Use double quotation marks. Single quotation marks are only for quotations within quotations, and titles of books, journals and articles that are given but are not hyperlinked.

‘A Lesson in Empathy’ in Psychology Today magazine

In longer passages of speech, such as the Statistician’s comment, open quotes for every new paragraph, but close quotes only at the end of the final paragraph.

Semicolon

Use a semicolon to show a link between two clauses. This should not be used if it makes a sentence over 25 words.

It is used to show that the second clause of a sentence is dependent on the first – that there is a link between them.

Each person is different; it is what makes life exciting

The fact that each person is different is the thing that makes life exciting. There is nothing else that can make life exciting in this situation, apart from each person being different. The ideas before and after the semicolon must be full sentences that could stand alone if necessary. If not, a semicolon must not be used.

Each person is different
It is what makes life exciting

Slash

The slash symbol is usually used to show “or”. Use “or” instead of the slash to avoid confusion. If a slash is needed, there should be no space either side of it.

masculine or feminine or neuter
house name or number

In statistical work, the slash can indicate rates, such as miles/day or input/output.

In computing a forward slash / is used differently to a backslash \ so make sure you use the correct one.

We are constantly improving based on research and best practice. Any significant changes to our guidance are available on the Updates page.