ESAT preparation guide

Choosing Your ESAT Modules: Official Combinations for Cambridge, Oxford, Imperial and UCL

Q: How many modules do I sit in the ESAT, and how long does it take?

Everyone sits Mathematics 1, and most courses require two further modules, three in total. Each module is 40 minutes with 27 multiple-choice questions, separately timed with no breaks, so most candidates test for 120 minutes. Imperial's Design Engineering, marked in the Course List as requiring two modules only, is an exception.

Q: Can I choose Mathematics 2 for Cambridge Natural Sciences?

Yes. The official Course List states that Natural Sciences (BCF0) requires Mathematics 1 plus any two of Biology, Chemistry, Physics and Mathematics 2, so Mathematics 2 sits in the pool alongside the sciences. Veterinary Medicine (D100) and Chemical Engineering and Biotechnology (H810) carry the same free choice.

Q: I picked the wrong ESAT modules. Can I change them?

Not directly. The official rule is that the selection cannot be changed without cancelling and re-booking the test, and once the booking window closes even that option disappears. Check the Course List requirement for every target course before you book.

Q: I am applying to both Cambridge and Imperial. Whose modules do I follow?

Under the official clash rule, courses with compulsory modules dictate your selection. If Imperial Physics fixes Mathematics 1, Mathematics 2 and Physics while Cambridge Natural Sciences offers any two, register the Imperial set, which also satisfies Cambridge. If two courses fix contradictory sets, no official mechanism reconciles them; contact the admissions offices before booking.

Q: Which ESAT modules does Imperial Design Engineering require?

Just two: Mathematics 1 and Mathematics 2. The Course List marks MEng Design Engineering (28G3) as requiring two modules only, so its candidates sit two 40-minute modules rather than the three-module, 120-minute test most candidates take.

Q: Does UCL Electronic and Electrical Engineering require the ESAT?

Yes, from September 2027 entry (including September 2028 deferred entry). Applicants sit three modules: Mathematics 1 plus any two of Mathematics 2, Physics, Chemistry and Biology. UCL accepts either the October or the January sitting.

Q: Should I take Mathematics 2 if I have not done Further Maths?

Judge it against the official specification. Mathematics 2 has eight chapters, including trigonometry, exponentials and logarithms, differentiation and integration, and it assumes all of Mathematics 1. If those chapters are material you are currently studying and practising, it is a sensible pick; if calculus and logarithms are shaky, the list will expose that quickly. Nothing official says any module is easier to score in, so back your strengths.

The first irreversible decision in an ESAT registration is not the test centre but the modules. Mathematics 1 is compulsory for everyone; most courses require two more; and which two is decided by the courses you apply to, not by taste. The consequences of getting it wrong are written into the official paperwork: register without a course's compulsory modules and your application to that course may be invalid. This guide lays out every official module requirement for Cambridge, Oxford, Imperial and UCL for 2027 entry, separates the fixed combinations from the genuine free choices, explains the little-known clash rule for multiple applications, and shows how to choose by A level strength when the choice really is yours.

10 sections2,046 words11 min read5 official sources

Practise 72 ESAT papers (2 free)Full ESAT guide

Papers: 72
Questions: 2790
Free to try: 2

ESAT Module Choice at a Glance

Structure: Mathematics 1 for all, plus two more for most courses: three modules
Scoring: Each module scored 1 to 9 to one decimal place; no overall total
Commonest fixed set: Maths 1 + Maths 2 + Physics (Cambridge Engineering, Oxford engineering and physics, five Imperial departments)
Changes and sittings: No changes once booked, cancel and re-book only; one sitting per cycle
Booking deadlines: Oct: 28 Sep 2026; Jan: 21 Dec 2026 (both 6pm UK time)

Based on the UAT-UK Course List for 2027 entry and the official content specification, which covers the October 2026 and January 2027 sittings; always confirm against the current cycle's Course List and departmental pages.

In short

Mathematics 1 is compulsory and most courses add two modules; whether the pair is fixed is settled only by UAT-UK's course-by-course Course List.
Cambridge Engineering, Oxford's engineering and physics courses and five Imperial departments all fix Mathematics 1 + Mathematics 2 + Physics, the commonest prescribed set.
Applying to several ESAT courses? The ones with compulsory modules dictate your selection; ignore them and that application may be invalid.
Module selections cannot be changed, only cancelled and re-booked, and you sit once per cycle, so verify every target course before booking.
With a free choice there is no officially preferred pair; modules are scaled separately, so tick off the specification topic lists and sit your two strongest subjects.

Part 1 of 3

Sections 01 to 04

The ground rules: five modules, Mathematics 1 compulsory

The ESAT has five modules: Mathematics 1, Biology, Chemistry, Physics and Mathematics 2. The core rule is short: every candidate sits Mathematics 1, and most courses require two further modules, making three in total. Modules are separately timed, spare time does not carry over, and there are no breaks between them. Universities look at your performance in the specific modules their course requires, so sitting the wrong ones cannot be papered over with a high score elsewhere.

modules in total; Mathematics 1 compulsory for all

40 min

per module, with 27 multiple-choice questions

120 min

total test time for most candidates

1 to 9

per-module score to one decimal place; no combined total

Mathematics 1

compulsory for all; every module assumes its content

Biologysubject topics on the mathematical base

11 specification chapters

Chemistrysubject topics on the mathematical base

17 specification chapters

Physicssubject topics on the mathematical base

7 specification chapters

Mathematics 2builds further mathematics on top of the base

8 specification chapters

Tap a branch to unfold

So the real question is not simply which two modules to add, but which two subjects you want to stack on the compulsory mathematical foundation.

Modules are course-specified: start with the Course List

A surprising amount of online advice treats ESAT modules as a free personal choice, and that is the first misconception to clear. Officially, some courses specify exactly which modules you must take, and UAT-UK tells candidates to check the university webpages for each chosen course carefully. The authoritative document is the Course List that UAT-UK publishes for each admissions cycle; the 2027 entry edition sets out, course by course, which test is required and which modules. Working out which pattern applies to every course on your UCAS list is step one of the whole decision.

	Fixed combination	Constrained free choice
Wording	Names every module outright, with no alternatives	Mathematics 1 plus any two of Biology, Chemistry, Physics and Mathematics 2
Example	Cambridge Engineering: Mathematics 1, Mathematics 2 and Physics	Cambridge Natural Sciences, UCL Electronic and Electrical Engineering, among others
What to do	All fixed: the tables below settle the matter	Any free choice: apply the choosing-by-strength method later on

Mind the validity window: the current content specification covers the October 2026 and January 2027 sittings, so rely on the current cycle's Course List and departmental pages rather than a forum post from a previous year.

Cambridge: one fixed course, three with a free choice

	UCAS code	Modules required
Engineering	H100	Mathematics 1 + Mathematics 2 + Physics (fixed)
Natural Sciences	BCF0	Mathematics 1 + any two of Biology / Chemistry / Physics / Mathematics 2
Chemical Engineering and Biotechnology	H810	Mathematics 1 + any two (same pool)
Veterinary Medicine	D100	Mathematics 1 + any two (same pool)

Cambridge has four ESAT courses for 2027 entry; Engineering (H100) is the only fixed combination of the four.

Mathematics 2 is explicitly on the official list. Plenty of unofficial guides assume Natural Sciences applicants must pick two of the three sciences; that quietly shrinks the pool. For a mathematically strong applicant leaning towards the physical side, Physics plus Mathematics 2 is a perfectly legitimate official combination, and the same applies to Veterinary Medicine and to Chemical Engineering and Biotechnology: the official Course List does not narrow their options.

Oxford: almost everything fixes Maths 1 + Maths 2 + Physics

Oxford's ESAT courses for 2027 entry are strikingly uniform: with the single exception of Biomedical Sciences, every course fixes Mathematics 1 + Mathematics 2 + Physics. Applicants to Oxford's engineering and physics routes therefore have no module decision to make at all; the preparation list is settled the day the application is.

Seven engineering courses

Maths 1 + Maths 2 + Physics

Engineering Science, Biomedical, Chemical, Civil, Electrical, Information, Mechanical Engineering

Two physics courses

Maths 1 + Maths 2 + Physics

Physics; Physics and Philosophy

Biomedical Sciences (BC98)

Maths 1 + any two

pool: Biology / Chemistry / Physics / Maths 2

Foundation Year variants

Check your exact line

the Course List lists with Foundation Year variants separately; do not assume they match the standard entry

One Oxford-specific constraint shapes planning: most Oxford applicants must sit the test in October, with the January exception applying to routes with January admissions deadlines such as the Astrophoria Foundation Year. Details are in the booking section below.

Part 2 of 3

Sections 05 to 08

Imperial: eight departments, and the Design Engineering exception

Imperial publishes its requirements by department, and eight departments require the ESAT. Five of the eight (Aeronautics, Civil and Environmental, Electrical and Electronic, Mechanical, Physics) converge on Mathematics 1 + Mathematics 2 + Physics, the single most common fixed combination across all four universities; the two chemistry-and-life-science routes break the pattern.

Imperial: 8 departments

grouped by required combination

Maths 1 + Maths 2 + Physicsfive departments, the commonest fixed set

Aeronautics
Civil and Environmental Engineering
Electrical and Electronic Engineering
Mechanical Engineering
Physics

Maths 1 + Maths 2 + Chemistryswaps Physics for Chemistry

Chemical Engineering

Maths 1 + Chemistry + Biologydrops Mathematics 2 entirely

Life Sciences

Maths 1 + Maths 2 (two modules only)the case the Course List singles out

Dyson School of Design Engineering
MEng Design Engineering (28G3)

Tap a branch to unfold

The Dyson School of Design Engineering is the exception the Course List singles out: MEng Design Engineering (28G3) is marked as requiring two modules only, Mathematics 1 and Mathematics 2, so its candidates sit two 40-minute modules rather than the three-module, 120-minute test most candidates take.

Imperial also states that you sit the ESAT once per application cycle, in October or January as you prefer, and that only your first score is considered; if Cambridge or Oxford is also on your list, however, October is required.

UCL: Electronic and Electrical Engineering joins from 2027 entry

UCL joins the ESAT list from 2027 entry: from September 2027 entry (or September 2028 deferred entry), applicants to its Electronic and Electrical Engineering undergraduate programmes (BEng/MEng) must take the ESAT.

Applies from

September 2027 entry

including September 2028 deferred entry

Courses covered

Electronic and Electrical Engineering

BEng / MEng undergraduate programmes

Modules

Maths 1 + any two

pool: Maths 2 / Physics / Chemistry / Biology

Sittings accepted

October and January

either sitting is accepted

Note the wording: UCL is an any-two course. If your UCAS list also contains a fixed-module course (Imperial's Electrical and Electronic Engineering fixes Mathematics 1 + Mathematics 2 + Physics, for instance), the clash rule in the next section says the fixed course dictates your selection, and that commonest fixed set conveniently satisfies UCL too. Applicants targeting UCL alone get the full benefit of the choice-by-strength method later in this guide.

Applying to two ESAT courses: the clash rule

Buried in the notes of the Course List 2027 Entry is the rule this page most wants you to know, because it invalidates applications quietly. When you apply to two or more courses that require the ESAT and at least one of them offers a free choice of modules, your selection must follow the courses that list compulsory modules.

The red line: register without a course's compulsory modules and your application to that course may be treated as invalid.

Scenario 1: Cambridge Natural Sciences plus Imperial Physics

Imperial Physics fixes Mathematics 2 and Physics, so you must sit the Imperial set; Mathematics 2 plus Physics happens to satisfy Cambridge's free choice too, so both applications are covered.

Scenario 2: Cambridge Natural Sciences plus Imperial Life Sciences

Life Sciences fixes Chemistry and Biology; sit Chemistry and Biology as it requires, again legal for both.

Scenario 3: two fixed courses that contradict each other

Say Imperial Life Sciences (Chemistry + Biology) alongside Cambridge Engineering (Mathematics 2 + Physics). You may sit the ESAT only once per cycle, the official materials describe most candidates as sitting Mathematics 1 plus two modules, and nothing published explains how two contradictory fixed lists could be reconciled in a single sitting. If your draft UCAS list creates such a clash, raise it with the admissions offices before booking, or rethink the list. Do not book and hope.

When the choice is genuinely free, choose by strength

If every ESAT course on your list offers the free choice (say, Cambridge Natural Sciences plus UCL Electronic and Electrical Engineering), the decision genuinely returns to you. Officially there is one framing statement about difficulty: the test is deliberately challenging, designed to differentiate between able applicants including those with the highest possible school grades. The practical inference is that with a free choice, your score matters more than whether a subject looks the part, so sit the two modules where you can perform best.

Tick off the specification topic lists

Mathematics 2 has eight chapters: algebra and functions, sequences and series, coordinate geometry, trigonometry, exponentials and logarithms, differentiation, integration, and graphs of functions. Physics has seven, Chemistry seventeen, Biology eleven. The two subjects with the most ticks, in recently practised material, are your modules.

Respect the dependency structure

Every module assumes Mathematics 1, and Mathematics 2 climbs further up the mathematical ladder. Candidates taking A level Mathematics, especially Further Mathematics, tend to find its chapter list familiar territory; rusty calculus and logarithms are exposed immediately.

Do not shop for a generous module

Each module is equated and scaled separately, UAT-UK publishes no grade boundaries, and no official material says any module is easier to score in.

Expect to land on your curriculum

A maths-and-physics A level pattern usually points to Physics plus Mathematics 2, and a chemistry-biology background aiming at life-science routes points to Chemistry plus Biology. Not an official rule, merely where the tick count usually leads.

III

Part 3 of 3

Sections 09 to 10

Booking mechanics: locked choices, one sitting per cycle

Module choice is executed at booking, and the system is unforgiving: your selected modules cannot be changed afterwards, and the only route is cancelling the test and re-booking; once the window closes, even that option is gone. Each UAT-UK test may be sat only once per admissions cycle, and the 2027 entry cycle spans the October 2026 and January 2027 sittings.

2026 – 2027Timeline

Sep 26

Oct 26

Nov 26

Dec 26

Jan 27

Feb 27

October booking deadline

6pm UK

Booking opens on 20 July 2026 at 3pm UK time and closes on 28 September at 6pm. Most Cambridge and Oxford applicants must sit in October.

October test days (China, HK, Macau)

12 or 13 Oct

Candidates testing in mainland China, Hong Kong or Macau sit on restricted days: the ESAT runs there only on 12 or 13 October.

October results

16 Nov

Results follow roughly four weeks after the test and are sent automatically to the institutions whose courses require it.

January booking deadline

6pm UK

Booking opens on 26 October at 3pm UK time and closes on 21 December at 6pm.

January test day (China, HK, Macau)

6 Jan

In mainland China, Hong Kong and Macau the January sitting runs only on 6 January.

January results

8 Feb

Results follow roughly four weeks after the test and are sent automatically to the institutions whose courses require it.

Hard deadline Event WindowOxbridge applicants sit October as a rule; the named exceptions are mature applicants to Cambridge mature colleges with a January deadline and Oxford's Astrophoria Foundation Year. Others may choose either sitting, and officially neither carries an advantage.

UK & Ireland centres

£78

fee set by test centre location

Centres elsewhere

£133

not by nationality or residence

Sittings per cycle

Once

a second registration, even under a new account, is misconduct

Results

About 4 weeks

after the test, sent automatically to the requiring institutions

Three recurring confusions

Myth one: seven universities use the ESAT

UAT-UK does state that seven UK universities use one or more of its tests, but that figure counts all three tests (ESAT, TMUA and TARA) together. Work through the Course List 2027 and the courses listed under Durham, LSE and Warwick use the TMUA; UAT-UK's own ESAT page names Imperial College London, the University of Cambridge, the University of Oxford and UCL as the ESAT universities. Some university pages blend the member list into an ESAT list; where lists disagree, follow UAT-UK and the Course List.

Myth two: book now, change modules later

That route does not exist: the selection is final short of a full cancellation and re-booking, and once the booking window closes even that option is gone.

Myth three: thinking in totals

There is no overall ESAT score; each module is reported separately on the 1 to 9 scale, results are matched course by course against your UCAS application and sent automatically to the institutions that require the test, and you cannot choose who sees them. The entire point of module choice is making sure the modules a course demands are the ones that appear on your result, at the level you are most confident of producing. That is exactly why the decision deserves this much attention before booking rather than after.

FAQ

Frequently asked questions

How many modules do I sit in the ESAT, and how long does it take?

Everyone sits Mathematics 1, and most courses require two further modules, three in total. Each module is 40 minutes with 27 multiple-choice questions, separately timed with no breaks, so most candidates test for 120 minutes. Imperial's Design Engineering, marked in the Course List as requiring two modules only, is an exception.

Can I choose Mathematics 2 for Cambridge Natural Sciences?

Yes. The official Course List states that Natural Sciences (BCF0) requires Mathematics 1 plus any two of Biology, Chemistry, Physics and Mathematics 2, so Mathematics 2 sits in the pool alongside the sciences. Veterinary Medicine (D100) and Chemical Engineering and Biotechnology (H810) carry the same free choice.

I picked the wrong ESAT modules. Can I change them?

Not directly. The official rule is that the selection cannot be changed without cancelling and re-booking the test, and once the booking window closes even that option disappears. Check the Course List requirement for every target course before you book.

I am applying to both Cambridge and Imperial. Whose modules do I follow?

Under the official clash rule, courses with compulsory modules dictate your selection. If Imperial Physics fixes Mathematics 1, Mathematics 2 and Physics while Cambridge Natural Sciences offers any two, register the Imperial set, which also satisfies Cambridge. If two courses fix contradictory sets, no official mechanism reconciles them; contact the admissions offices before booking.

Which ESAT modules does Imperial Design Engineering require?

Just two: Mathematics 1 and Mathematics 2. The Course List marks MEng Design Engineering (28G3) as requiring two modules only, so its candidates sit two 40-minute modules rather than the three-module, 120-minute test most candidates take.

Does UCL Electronic and Electrical Engineering require the ESAT?

Yes, from September 2027 entry (including September 2028 deferred entry). Applicants sit three modules: Mathematics 1 plus any two of Mathematics 2, Physics, Chemistry and Biology. UCL accepts either the October or the January sitting.

Should I take Mathematics 2 if I have not done Further Maths?

Judge it against the official specification. Mathematics 2 has eight chapters, including trigonometry, exponentials and logarithms, differentiation and integration, and it assumes all of Mathematics 1. If those chapters are material you are currently studying and practising, it is a sensible pick; if calculus and logarithms are shaky, the list will expose that quickly. Nothing official says any module is easier to score in, so back your strengths.

SOURCES

Official sources

MORE GUIDES

Other ESAT preparation guides

Learn it as a lesson

About the test

4 min · 4-question check · progress saved

The student version of this guide: one sitting to read, checked as soon as you finish.

FrontierVUE is an independent practice platform. It is not affiliated with or endorsed by UAT-UK, Pearson, OCR, the University of Cambridge, Imperial College London, or any official admissions-test owner.

Put it into practice

72 ESAT papers on FrontierVUE, including 41 Frontier Original mocks built to the current format, every question with a worked solution. The first 2 papers are free.

Practise ESAT papers See pricing