You can purchase different training/assessment packages here.
Core Gas Safety Training and Revision
Reference book, Self-assessment exercises, Training Software.
Plus: Domestic Gas Appliances Installation, commissioning, and safety inspection.
Flue Gas Analysis
The Software package has two parts. Training modules, and Preparing for the Written Assessment.
Price includes delivery.
Plumbing Theory Revision
There are two sections in this package. Training, and Assessment.
The Training section has presentations showing how things work. The Assessment section has multiple choice questions which will help you pass all your Plumbing Theory exams.