I'm sure many of us can fondly list products that made Cumbria famous. The pencil originated from Keswick, nuclear submarines are synonymous with Barrow. However, whilst this might excite fans of graphite or have seaman thumbing their copy of Jane's Fighting Ships, there can't be many rail enthusiasts getting nostalgic about Workington's contribution to the modern day railway; the Leyland built class 155 Sprinter.

So bad were these units that a short time after introduction, they were taken out of service en masse as the door open button acted akin to a pinball flipper, causing any of the units doors to open or close at an alarming velocity.

This video marks the return of the units into traffic, with the promise of 'thorough improvements'.

Continuity thoroughness was obviously not overtly important in the production of the video. The early stages show the unit approaching Newport on the Up Main, before rolling into the station in the down direction on the relief.

The as yet unidentified driver (we have a team of detectives on the case) appears to be the one who could have his pick at the BRSA disco, resplendent as he is with permed highlights and white socks. He is joined by the keyboard player from Sparks as his guard, his disguise of oversized shades not fooling our keen eye.

The revised door procedures are then explained in the now defunct, but shortly to be relived, Cardiff Central Riverside platforms. The door mods that have taken place appear to centre on an exterior handle being cut into the outer shell, along with a budget lock, to make it easier to manually close and lock the door when it fails. An 'appropriate label' is then applied to the door to signify it is out of use. The fact that this is an official training video does still not merit proper signage, and some handwritten scrawl is deemed to suffice. Everyday scenarios of an RO2 leaving a swag bag obstructing the door, or two 1970s television show CID officers getting trapped amid the thrust of an overtly manly handshake.

Action returns to the red star bay at Newport where there is then a vague nod to the rule-book as various scenarios regarding raising the TIS are given, for which the unit must be failed unless it is an unmanned station, or if any of the crew are on a promise back home.

By now, the station backdrop of class 37s on MGRs or 116 DMUs has been replaced by a lurking class 156 DMU, which is later used in the coupling demonstration. I'm sure the passengers on the Norwich -- Liverpool that day were all to happy to have their normal unit substituted by a Ped and two previously condemned Mark 1s.

A very sparse Canton Depot is the scene as the programme moves on to coupling procedures. The interior of the carriage shed showing signs of the prolonged employment of Jacko's uncle (private joke applicable only to Station Contracts Managers) as it appears devoid of anything not made of wrought iron or concrete.

At the depot, various attachments and detachments are made to the aforementioned class 156, before the video concludes with the type of music that only exists in 1980s training videos.

As we know, these fixes cured the ills of the class 155s once and for all, and have gone on to give sterling service in their complete form, along the way gaining the affection of passengers and enthusiasts alike.