TG20 should be standard practice from all scaffolding companies in the UK.
Unfortunately it's becoming more noticeable that these standards are not being met far and wide.
Not only is it an open market for unsafe practice it's allowing unsafe and uninsured companies to put up scaffolding without a care of the trades using the scaffolding or customers when the scaffolding collapses or causes hundreds or even thousands of pounds of damage, leaving the cost to the coustomers.
Make sure you do your research!