A
"relevant person" for notifiable work is—
(a) if the work is being carried out by or for a public sector entity or an entity mentioned in section 135 (2) —the entity; or
(b) if a licensed contractor supervises the carrying out of, or directs another person to carry out, the work, whether or not the contractor is also a licensee for the work—the contractor; or
(c) if 1 licensee supervises the carrying out of, or directs another person to carry out, the work—the licensee; or
(d) if 2 or more licensees jointly or separately supervise the carrying out of, or direct another person to carry out, the work—1 of the licensees; or
(e) otherwise—the licensee who carries out the work.