An easy and effective way to determine the competence of a scaffolder, is to view his/her Construction Industry Scaffolders Record Scheme (CISRS) Card. A CISRS card is proof that a person has received formal training and passed the relevant assessments required to become a certified scaffolder. Such a person will possess the necessary skills to erect, dismantle and alter scaffolding as necessary.
To find out more about the competence of a scaffolding company, you can ask about past projects they have completed as take a look at what their past clients have to say in reviews and testimonials about their service.