UK

No law requires a CSCS card, yet no major site lets you past the gate without one. Here's which colour matches which qualification, and what it never proves.

Most domestic electrical work is not notifiable at all. Here's what Part P actually catches, why Wales is wider than England, and what turns up at sale.

Gas Safe registration belongs to the business, not the person holding the card. Here's what the back page covers, and what it costs when nobody checks.