List every subject and topic, then rate each out of five for confidence. Give weaker topics more slots. Block revision into forty-five minute sessions with ten-minute breaks, no more than three back to back. Rotate subjects daily so nothing goes stale. Leave the final week before each exam for past papers only. Keep one evening a week completely free. A timetable you actually stick to beats a perfect one you abandon by week two.

Maths and Physics: worked examples, then similar questions from memory, then past papers. Biology, Chemistry and RS: flashcards for key terms, quotes and definitions, backed by topic blurts. English Literature: quote banks, essay plans and practising analytical paragraphs. History and Geography: mind maps for causation and case studies, plus timed exam questions. Languages: spaced repetition for vocab and daily listening practice. Never use one technique for everything — match the tool to the job.

Mostly alone, with occasional group sessions. Real revision requires focused retrieval practice, which is hard in a group. Use friends for quizzing each other on quotes or definitions, explaining topics out loud (the best test of real understanding), or marking each other's essay plans. Avoid so-called study sessions that turn into chatting in a coffee shop. If a friend is on a different topic or pace, you will lose far more time than you gain.