UK vs US Prepositions — Comparison
Here's a small confession to start us off. I once spent a genuinely stupid amount of time, in an email to an American client, hovering over whether I'd written "I'll fill in the form" or "I'll fill out the form." Both felt right. Both were right — just on opposite sides of the Atlantic. And that's the thing about prepositions: they're tiny, they're everywhere, and the differences between British and American English hide in exactly the words you'd never think to check.
If you've already read the core preposition guides (H6.1 for UK usage, or its US twin H6.1-US), you know what these little words actually do. This page isn't about that. It's a reference — a place to come when you're writing for the other lot and something feels faintly off. Weekends, dates, forms, streets, the odd verb that quietly refuses to keep its preposition: this is where UK and US part ways.
Let's be honest — nobody's born knowing this, and most native speakers on both sides only notice when a spellchecker or a colleague flags it. None of these differences is a mistake. They're regional standards, as correct in their own place as spelling colour [US: color]. So keep this open in a tab, scan for the situation you're in, and choose the form that fits your reader.
Time
Dates and days are where the crack between the two varieties bites first, mostly because it turns up in the sort of everyday sentence you write without thinking.
| UK | US | Example / notes |
|---|---|---|
| at the weekend | on the weekend | UK: "What are you doing at the weekend?" US: "…on the weekend?" The classic one. Also at weekends (UK) ≈ on weekends (US) for the habitual sense. |
| Monday to Friday | Monday through Friday | US through makes the end day explicitly included. UK uses to (also till / until); through is understood but reads as American. |
| a quarter to three | a quarter of/to three | "A quarter of three" (= 2:45) is common in US speech; UK sticks with to. |
| five past ten | five after ten | UK past; US often after. Both understand each other. |
| in future (from now on) | in the future | UK drops the article in the phrase "In future, please email me first." US keeps it. Both say "in the distant future." |
Common Mistake: Writing "on the weekend" in a UK-facing piece — or "at the weekend" in a US one — won't cause any confusion, but it quietly announces which side of the water you learned your English on. If you're localising, fix it.
Place and position
These are the ones that make a sentence feel subtly foreign without being wrong. Notice how often British English drops the while American English keeps it.
| UK | US | Example / notes |
|---|---|---|
| in the street | on the street | UK: "There's a car parked in the street." US: "…on the street." (Both say "in the road.") US on is creeping into UK use, so this one's softening. |
| in a team | on a team | UK: "She's in the team." US: "She's on the team." Same with committees: in (UK) / on (US). |
| live in [street name] | live on [street name] | UK: "I live in Baker Street." US: "…on Baker Street." Both use at + a house number. |
| at university (no article) | in college | UK: "He's at university." US: "She's in college." (At school works for both; US also says "in school.") |
| in hospital (as a patient) | in the hospital | UK drops the article: "She's in hospital." US keeps it. Same pattern with in prison; both keep at school. |
Pro-Tip: When in doubt over the tricky pairs, "different from" and keeping your prepositions consistent will never let you down. More on different below — it's the one people actually argue about.
Movement and direction
Prepositions of movement are remarkably stable across the Atlantic — but there are a few classic swaps worth knowing.
| UK | US | Example / notes |
|---|---|---|
| out of the window | out the window | UK keeps of; US routinely drops it. "He threw it out the window" reads as American. |
| round the corner | around the corner | UK freely uses round as a preposition ("look round," "round the corner"). US almost always around. |
| go to hospital | go to the hospital | Parallel to the place pattern above — UK drops the article, US keeps it. |
| towards | toward | A spelling difference, not a preposition choice. UK prefers the -s; US drops it. Both understood everywhere. |
Common Mistake: British writers sometimes over-correct into stiff, textbook prepositions inside American dialogue — a US character saying "write to me" when the natural line is "write me." Match the preposition to the voice, not just the rulebook.
Dependent prepositions (the sneaky ones)
These attach to particular verbs and adjectives, and they're the hardest to catch because there's no logic to fall back on — you just have to know them. They're also the fingerprint of your English: a native reader clocks them instantly, even when they can't say why. For the full dependent-preposition system, see H6.3; I'm listing only the UK/US splits here.
| UK | US | Example / notes |
|---|---|---|
| different from / to | different from / than | Different to is at home in BrE; different than in AmE, especially before a clause ("different than I expected"). Different from is safe in both. |
| cater for | cater to | UK: "The restaurant caters for vegetarians." US: "…caters to vegetarians." |
| protest against | protest (no preposition) | UK: "They protested against the bill." US: "They protested the bill" — direct object, no preposition. |
| appeal against a decision | appeal the decision | UK keeps against (common in legal usage); US drops it and takes a direct object. |
| write to someone | write someone | UK keeps to: "I'll write to you." US drops it: "I'll write you." The US version can jar on British ears. |
| chat to / talk to | chat with / talk with | US leans more readily on with for conversation. Both are fine. |
| enrol on a course | enroll in a course | Preposition and spelling both shift. |
| research into | research (often no preposition) / research on | UK: "research into climate change." US: "research climate change" or "research on…" |
Pro-Tip: Different from, write to, and protest against are widely understood and inoffensive on both sides — the safe middle ground for a mixed audience. If you've only time to check one category before you send, check the dependent prepositions. They're the ones a native reader notices first.
UK vs US Usage: how to choose
Two honest caveats before you go.
First, this is a moving picture. American usage travels — through film, telly [US: TV], and the internet — so plenty of "US" forms now sound perfectly natural in British mouths, especially "on the weekend" and "on a street." Nobody will misunderstand you either way. Neither system is purer or cleverer; they're two well-worn, mutually comprehensible ways of doing the same job.
Second, consistency matters more than picking the "right" side. A stray "fill out the form" three paragraphs after "at the weekend" is exactly the sort of thing a careful reader notices without being able to name it — and it makes the writing feel patched together. So, in practice:
- Writing for a specific market — a UK university application, a US cover letter, a British magazine? Match that market's prepositions. It's a small signal of fluency.
- Writing for a mixed or international audience? Pick one variety (or your house style) and hold it steady throughout.
- Editing someone else's work? Check the brief or house style; if there isn't one, make a call and apply it. Flag mixed prepositions as a consistency issue, not an error.
- Just reading widely? Train your eye to notice these without judging them. They're not mistakes — they tell you where the writer learned their English.
If a client or teacher has already chosen a style guide, follow it for prepositions the same way you would for spelling. The tables above are the map; the guide makes the final call.
Key Takeaways
- Time: UK at the weekend, Monday to Friday, in future; US on the weekend, Monday through Friday, in the future.
- Place: UK in the street, in a team, at university, in hospital; US on the street, on a team, in college, in the hospital.
- Movement: UK out of the window, round the corner, towards; US out the window, around the corner, toward.
- Dependent prepositions are the trickiest and most telling — different to/than, cater for/to, protest against/protest, appeal against/appeal, write to/write someone.
- When unsure, "different from" — and keeping your prepositions consistent — will never let you down.
Check Your Understanding
- A British colleague asks what you're doing "at the weekend." How would an American most naturally phrase the same question?
- Rewrite this US sentence in UK English: "She lives on Elm Street and threw the keys out the window."
- Which choice — different to, different than, or different from — is safe for both UK and US readers?
- In American English, how would you shorten "appeal against the decision"?
- For a mixed international report, name two preposition choices that are safe middle ground.
Answer Key
- "What are you doing on the weekend?"
- "She lives in Elm Street and threw the keys out of the window." (British readers would also happily accept "on Elm Street" now.)
- "different from" — correct and uncontroversial on both sides.
- "appeal the decision" — US drops the against and takes a direct object.
- Any two of: different from, write to, protest against, Monday to Friday.
Related Articles
- H6.1 — Prepositions: the core concepts (UK), and its US variant H6.1-US — start here for what prepositions actually do.
- H5.2 — Articles (a/an/the and the zero article) — relevant to the hospital, university, school patterns above.
- H6.3 — Fixed expressions and dependent prepositions — where the swaps like fill in/fill out really live.
- H0 — UK vs US English: the big picture, and how this preposition cluster fits together.