Combined Science Paper 5 Practical for Private Candidates 2026: 5086, 5087, 5088 Guide

TL;DR
Combined Science private candidates sit one Paper 5 covering both science components in their combination (e.g., Physics and Chemistry for 5086).
You need practical training in both components - not just one.
Paper 5 is 1 h 30 min, 30 marks, 15% of your final grade.
SEAB registration is 7–20 April 2026. Start practical training before then so the declaration you make at registration is truthful, and complete the course before the practical paper.

Quick private-candidate map

• TL;DR: Train both science components before Paper 5.
• Paper 5 at a glance: Check duration, marks, weighting, and structure.
• Prep timeline: Plan training before registration and complete exam-style sessions before the practical.

Who this guide is for

This guide is specifically for private candidates sitting Combined Science at O-Level:

• 5086 - Science (Physics, Chemistry)
• 5087 - Science (Physics, Biology)
• 5088 - Science (Chemistry, Biology)

If you are sitting Pure Science (6091 Physics, 6092 Chemistry, or 6093 Biology), the practical requirements are different - see the pure science practical guides instead.

Paper 5 at a glance

Paper 5 is the practical component shared by all three Combined Science syllabuses.

Reviewed by

Marcus Pang·Managing Director (Maths)