This falls far short of the common industry benchmark of answering eight out of ten calls within 20 seconds.

Analysts forecast a 5.8 per cent rise in like-for-like sales, the industry benchmark.

The group's total property return was 8 per cent, substantially ahead of the industry benchmark of 3 per cent.

The plumbing training facilities are recognised as a national industry benchmark including a plumbing sandpit, simulated house stations and an advanced gas training laboratory.

Known for its reliability, the 153 was an industry benchmark until the 1980s.