The Go-To Revision App for UK Trades
PlumbTheory+ gives you instant access to over 4,000 expert-level questions across Plumbing, Gas, Electrical, HVAC, Joinery, Bricklaying, Building Regulations, and CSCS — plus full mock exams, real-world scenarios, and essential trade reference guides.
Welcome to PlumbTheory+
PlumbTheory+ is the complete revision platform for UK tradespeople and students. Whether you're preparing for Plumbing, Gas, Electrical, HVAC, Joinery, Bricklaying, Building Regulations or CSCS exams, our app provides tailored quizzes, mock exams, and real-life scenario questions designed to help you succeed.
Go beyond revision with access to trusted reference content including pipe sizing, system layouts, minimum gradients, regulations, fault codes, and more. Each question comes with clear explanations and instant feedback, while your progress is tracked automatically. Built for serious learners, PlumbTheory+ helps you revise with purpose and confidence.
What Our Users Say
Mike Johnson
Level 3 Plumbing Apprentice, Birmingham
"I was struggling with calculations on my Level 3 course. After using PlumbTheory+ for a month, my test scores jumped from 60% to 88%. The way they break down the formulas made everything click for me."
Sam Thompson
Gas Safe Engineer, Manchester
"Used this to refresh my knowledge before my Gas Safe reassessment. The gas safety scenarios were spot on - exactly the kind of situations that come up in the practical assessments. Well worth the subscription."
Laura Davies
Level 2 Student, London College
"As a woman entering the trade, I wanted to be extra prepared. PlumbTheory+ gave me the confidence to ace my exams. The reference materials alone saved me countless hours of flipping through textbooks."
Rob Kelly
Plumbing Lecturer, Yorkshire
"I recommend PlumbTheory+ to all my students. The questions match the exam board style perfectly, and the tracking helps me see who's putting in the work. It's been a fantastic teaching aid."
Features
Topic-Based Quizzes
Practice quizzes for Plumbing, Gas, Electrical, HVAC, Joinery, Bricklaying, Building Regs, and CSCS — all aligned with real exam standards.
Reference Resources
Quick reference tools for pipe sizing, electrical ratings, ventilation, regulations, system specs, and more.
Progress Tracking
Track your performance with instant feedback and detailed analytics.
Detailed Explanations
Understand every question deeply with full explanations provided after quizzes.
Frequently Asked Questions
What is PlumbTheory+?
PlumbTheory+ is an online revision platform designed to help UK trade students prepare for their Level 2, Level 3, and Gas exams with quizzes, explanations, and essential resources. It covers a range of different trades.
Is PlumbTheory+ free?
Yes! Some topics are available for free. Full access to all the Level 2, Level 3, Gas topics, real-life scenarios, and other subjects require a Pro subscription.
Can PlumbTheory+ help me pass my exams?
Absolutely! Our platform is built around UK exam standards and current Building Regulations, giving you the best tools to pass confidently.