At Airports that have switchable taxiway lighting, which is operated by ATSA's, there is no form of competency checking and they work under the delegated authority of the Ground Controller. Whose competency is checked.
Why then was a trainee Lighting Operator blamed at LHR for routing an aircraft somewhere he shouldn't have, causing a ground 'incident'...?
LCE's get paid extra for being LCE's. Is NATS really going to pay ATSA's extra to be ATSA LCE's...?
............?