
I took this photo meself in 1979 and the location was my home depot at Bridgend, which also incorporated a substantial on-site bus station.
The coach is indeed a Bedford YRT, though with Willowbrook's 51-seat 'Expressway' body.
It was one of a quartet from our neighbouring NBC subsidiary, The South Wales Transport Co; who also had 10 similarly-bodied 45-seat YRQs.
The 'Expressway' had forced-air ventilation, and was Willowbrook's assault on the market which was then dominated by Duple and Plaxtons.
509 seen here, was based at Swansea (Clarence Terrace) and regularly appeared on the Llanelli-Swansea-Bridgend-Cardiff limited-stop service, which was jointly operated with our company, National Welsh Omnibus Services Ltd. Although a punishing schedule, it was really the only route that was suitable for these ungainly and under-powered 'sheds' - we used Marshall-bodied Leyland Leopards to operate our share of it.
Bridgend's fitters were forever being called-out to recover/repair these Bedfords as they frequently crossed our patch.
I'd just changed a clutch pedal assembly fulcrum pin on the coach in this photo, which was a common failure on these YRTs; and was about to effect a change-over so that we could get our 'loaned' bus back from SWT.
Little surprise then, that SWT never repeated a Bedford/Willowbrook order!

Many operators were unhappy with the relatively poor performance of their YRT-based vehicles, and Bedford responded with an important upgrade ............. :-?