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Online 1-to-1 & Group Tutoring  ·  North London & Hertfordshire

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Structured, exam-focused tutoring tailored to the individual student, not the textbook. 11+ preparation for selective school entry, plus Maths, Biology, Chemistry, Physics at GCSE and A-Level.

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Live session A-Level Biology · AQA · Enzyme Inhibition
REC 00:48:23
Tutor   Student
Student typing
AQA A-Level Biology · June 2023 · Q5b Describe how a non-competitive inhibitor affects the rate of enzyme activity. [4 marks] Enzyme S I Active site unchanged S = substrate · I = inhibitor Non-competitive inhibition: Inhibitor binds to allosteric site (NOT active site) This changes the tertiary structure of the enzyme Active site shape distorted → substrate can't fit Rate of reaction decreases , even with ↑ substrate conc. Key exam point: concentration of substrate has NO effect, this separates competitive vs non-competitive ✓ Rate vs [Substrate] [Substrate] Rate normal + inhib. Vmax Vmax↓ Student: The inhibitor binds to the allosteric site, changing the tertiary structure so the active site changes shape and substrate cannot bi 3/4, add "rate ↓" clearly Harsil Mark scheme step ✓ AQA exam technique Next: draw inhibition graph A-Level Biology · Unit 2
H
Harsil · Tutor
A
Alex · Yr 13
48 min · recording
Past paper shared
Mark scheme open
Russell Group-educated tutors · All major exam boards covered · Structured, exam-board aligned lessons · 1-to-1 & small group sessions
AQA
Maths
Biology
Chemistry
Pearson Edexcel
Physics
Biology
Chemistry
OCR
Chemistry
A-Level
Biology
Chemistry
Cambridge Assessment
11+ VR
11+ NVR
11+ Maths
11+ English
AQA
Maths
Biology
Chemistry
Pearson Edexcel
Physics
Biology
Chemistry
OCR
Chemistry
A-Level
Biology
Chemistry
Cambridge Assessment
11+ VR
11+ NVR
11+ Maths
11+ English

What we offer

Three programmes. One standard.

Every programme is structured around the student's specific exam board, target school or qualification, not a generic syllabus. Full details on each dedicated page.

11+ Preparation

Selective & grammar school entry

Format-specific preparation for GL Assessment, CEM and independent school papers. Verbal reasoning, non-verbal reasoning, Maths and English, all taught with deliberate speed and accuracy training built in from the start.

GL Assessment CEM Independent schools
Includes
VR & NVR strategy training
Timed mock papers with review
Maths & English components
View 11+ programme

GCSE

Maths, Biology, Chemistry & Physics

Gap-first teaching aligned to the student's exact exam board and tier. Mark-scheme language is embedded from session one, so content knowledge converts into marks rather than near-misses. 1-to-1 and small group options available.

AQA Edexcel OCR Foundation & Higher
Includes
Diagnostic gap analysis
All 4 subjects · 1-to-1 & group
Post-session parent updates
View GCSE programme

A-Level

Biology & Chemistry

Specification-mapped sessions for Year 12 and Year 13. Extended answer construction, data interpretation and required practicals are all embedded, not treated as revision-season extras. The gap between a B and an A is usually technique, not knowledge.

AQA OCR A Edexcel Year 12 & 13
Includes
Full spec mapping & gap analysis
Extended answer & data technique
Required practicals covered
View A-Level programme

Why Ascera

Structured support that earns marks

Most students do not struggle through lack of effort. They struggle because no one has shown them precisely what the examiner is looking for. Here is exactly how Ascera addresses that, from the first enquiry to results day.

01

Diagnostic assessment

Most students don't know where they're actually losing marks. The diagnostic finds the pattern, whether it's a topic gap, a method applied incorrectly, or exam-technique failures that no amount of content revision will fix.

02

Tailored session plan

Sessions are built around the gaps the diagnostic finds, aligned to the student's exact board, and structured around the answer formats, command word logic and mark-scheme language each examiner rewards. Not what to learn. How to demonstrate it.

03

Mock papers & forensic review

Timed mocks are sat regularly and broken down by error type: was it a concept not understood, a method applied incorrectly, or a time-pressure mistake? The same wrong answer can require a completely different response, and that distinction shapes every session that follows.

04

Progress tracked, plan updated

The plan isn't set once and left. As mock performance shifts, the plan shifts. Parents see exactly what's improving, what still needs work, and what the next session will focus on, after every session, not just at the end of term.

Exam-board specific, always

AQA, Edexcel and OCR use different mark-scheme conventions, command word definitions and question structures. Sessions are always taught against the student's actual board, never a generic syllabus that approximates across all three.

Teaching the HOW, not just the what

Knowing the answer and writing an answer that earns the mark are different skills. Students learn the precise phrasing, structure and command-word logic each examiner rewards, so understanding converts directly into marks, consistently.

Our tutors hold degrees from leading Russell Group universities, including:

Imperial·UCL·LSE·KCL·Manchester·Warwick

Testimonials

What parents and students say

Real feedback from students and families who have worked with Ascera Tutoring.

★★★★★

“We were a bit worried before starting as Physics had always been a weak point, but after a few weeks we could already see a difference. He's much more comfortable with the topics and not as anxious going into exams.”

GCSE Physics Grade 4 → 7
P
Parent of Year 11 student Summer 2025 Verified
★★★★★

“Thank you for being so patient with her. You took the time to really understand where she was struggling and worked through it step by step. Her confidence has grown a lot.”

A-Level Chemistry Grade C → A
P
Parent of Year 12 student Autumn 2024 Verified
★★★★★

“Really appreciate all the help over the past few months. The focus on exam technique made a big difference and my daughter said she felt much more prepared going into her GCSEs.”

GCSE Chemistry Grade 5 → 7
P
Parent of Year 11 student Summer 2025 Verified
★★★★★

“We've tried a couple of tutors before but this has definitely been the most effective. Lessons are structured but still engaging, and my daughter comes away actually understanding the content.”

GCSE Combined Science 5-5 → 7-7
P
Parent of Year 11 student Summer 2024 Verified
★★★★★

“My daughter actually looks forward to the sessions, which says a lot. She used to really struggle with Biology, but things seem to be clicking now and her school tests have improved quite a bit.”

GCSE Biology Grade 5 → 7
P
Parent of Year 10 student Autumn 2024 Verified
★★★★★

“Just wanted to say thank you again. My son ended up with a Grade 8 in Maths, which we honestly didn't think was possible a few months ago. More than anything though, he's so much more confident now.”

GCSE Maths Grade 6 → 8
P
Parent of Year 11 student Summer 2024 Verified
★★★★★

“My son didn't really have a clear revision strategy before, but now he's a lot more organised and knows how to approach questions properly. His predicted grades have gone up as a result.”

GCSE Maths Grade 5 → 7
P
Parent of Year 11 student Spring 2025 Verified
★★★★★

“Thanks again for all your help. My son exceeded his predicted grades and is now feeling much more confident going into A-Level Maths. We'll definitely be continuing.”

GCSE Maths Exceeded predicted grades
P
Parent of Year 11 student Summer 2025 Verified
★★★★★

“After every session my son says things are finally making sense. We'd never heard that before. It's made a real difference to how he approaches Maths.”

GCSE Maths Grade 4 → 6
P
Parent of Year 10 student Spring 2025 Verified
★★★★★

“I just wanted to say thank you for all your efforts. He received 9-9 in science and we really needed a good tutor like you.”

GCSE Combined Science Grade 9-9
P
Parent of Year 11 student Summer 2025 Verified
★★★★★

"We started preparing about eight months before the exam. The structured approach, particularly the timed paper practice and verbal reasoning sessions, made a real difference. She was offered a place at her first-choice grammar school."

11+ Preparation Grammar school offer
P
Parent of Year 6 student Autumn 2024 Verified

FAQ

Common questions, answered

A short call to discuss the student's current grade, target grade, exam board, and any specific areas of difficulty. It is an opportunity to confirm that Ascera is the right fit, no commitment is required and no payment is taken beforehand.
AQA, Edexcel and OCR for GCSE and A-Level. GL Assessment, CEM and ISEB for 11+. Sessions are always planned around the student's specific board, not a generic curriculum.
Yes. Harsil holds an Enhanced DBS certificate, renewed regularly. Full details are available on request.
Any device with a camera, microphone, and a stable internet connection, laptop, tablet, or desktop. Sessions use a shared interactive whiteboard so students can write and annotate in real time. No software needs to be installed in advance.

Get in touch

Start with a free consultation

Reach out via any of the channels below. We aim to respond within 24 hours.

The consultation is a short call to understand where the student currently is, what they're working towards, and where the gaps are. There's no obligation to proceed, it's simply a chance to make sure Ascera is the right fit.

Free consultation call
Response within 24 hours
Tailored to your subject and exam board
Flexible scheduling to fit around school
What to include: Subject · Year group · Current grade · Target grade · Exam board