August 18, 2026 Graham Muspratt

KMRC Wagon SPA/ZAA PIKE and SEA Wagons - OO Gauge

The first 600 production SPAs were built at Shildon works in 1979-1980 to lot number 3839 and numbered 460002-460601. A second batch to the same design code was built in 1980/1981, again at Shildon. Lot number 3962 was originally for 900 wagons but the last 400 (intended to have been numbered 461102-461501) were cancelled before being built.
It soon became evident that there was a surplus of SPAs and most of the first 330 wagons (460002-460331 range) were transferred to departmental use in 1983. These were recoded ZAA and the numbers gained a DC prefix, with the tradition of departmental wagons being named as fish types being maintained with PIKE being allocated. 40 further SPAs became ZAAs with ADC prefixes as part of the CM&EE fleet. Other conversions affected wagons remaining in the revenue fleet. At least 40 SPAs were fitted with cradles to carry coils (28 by 1985), while some others were modified to carry pig iron.

One modification in the 1980s was the fitting of a flexible hood to protect loads of steel rod coil. The blue hoods carried Railfreight Metals lettering plus the logo of main customer Allied Steel and Wire (Cardiff). 460619 was so modified by 1988 and new TOPS code SEA was issued in 1989. A total of 20 were in service by the beginning of 1990, rising to 35 by 1991.

In 1997 60 SPAs (including some former ZAA and ZCA wagons) were modified at Adtranz, Crewe into ZCA Sea Urchin ballast wagons. This type had been in service in large numbers since the early 1990s but previous conversions had been from OBA opens or VAA/VBA/VDA vans. The new rebuilds retained the existing ends but featured new, fixed sides with substantial side ribbing and angled tops to prevent the accumulation of spilled ballast. The wagons were finished in EWS maroon with yellow top capping.

Just under 700 wagons were still in use in 2005.

We wish to acknowledge the help of Paul Bartlett on this project and you can see his gallery of SPA wagons here

The Models
We have produced four ZAA PIKE versions and four SPA Railfreight (weathered) versions, in addition we produced four SPA EWS versions.
In November 2021 new versions of the SPA both pristine and weathered with one pristine ZAA Pike, along with new tooling for the SEA Hood versions were announced under the EFE Rail brand.

In the Autumn 2026 Bachman British Railway Announcements it was revealed that we have produced three new versions including a Balfour Beatty livery version for the first time for their EFE Rail brand as shown below.

KMRC ZAA Pike Wagons