It's a great question.
The code written in the U.K. was done with a very light touch. The drafting was very broad, which leaves it open to interpretation. It is not a legal tome. If it were a legal tome, people would spend all their time trying to figure out how to get around it. It's there to be interpreted. The adjudicator has the freedom to interpret it and to work with suppliers and manufacturers to adjust definitions that meet need according to particular circumstances at the time.