Changes

The loco was constructed at English Electric's Vulcan Foundry (Works Number EE/VF3383/D849 of 1963) and entered service with BR as D6905 at Llandore on 5 November 1963that year. Transfers followed to Cardiff Canton in 1967, Eastfield and Polmadie in 1968 and a return to Eastfield in 1972. In January 1973 the locomotive was re-numbered 37205 following the introduction of TOPS. It was further re-numbered 37688 in 1986 following rebuilding as a Class 37/6<ref>[http://www.brdatabase.info/locoqry.php?action=locodata&type=D&id=6905&loco=6905 BR Database] (Retrieved 5 August 2019)</ref>.

In early On 8 February 2017 37688 was sold by DRS and acquired by D05 Preservation Limited.<ref>[https://www.class37.co.uk/fleet.aspx?strnumber=37688 Class 37.co.uk] (Retrieved 12 January 2020)</ref><ref>[https://www.flickr.com/photos/77792219@N08/36281585044 flicr photo]</ref> It was initially resident on the Mid-Norfolk Railway.<ref>[http://norfolk-orbital-railway.co.uk/class-37-diesel-locomotive-joins-mid-norfolk-railway/ Norfolk Orbital Railway]</ref> The locomotive was subsequently repainted from DRS livery into Trainload Construction livery and renamed 'Great Rocks', with Buxton TMD depot plaques and ICI crests being fitted.<ref>[https://en-gb.facebook.com/D05pres/posts/d05-is-pleased-to-announce-that-37688-will-be-repainted-into-trainload-construct/1656876887946774/ D05 Preservation Limited Facebook]</ref>