The disc being carried by No.30777 Sir Lamiel, is probably meant to signify that she is hauling a stopping passenger service. In her Southern days it would have indicated something rather different. It could have indicated that No.30777 Sir Lamiel, was working Victoria – Dover via Chatham, a turn she would no doubt have been familiar with, or Woking – Reading via Virginia Water west curve, a route she might have taken less often, or even Exeter Central – Ilfracombe, amongst several other possible routes. The essential thing, I suppose, is that the disc gives the signalman important information about the train, just as the tail lamp, or lack of one, does.
No. 30777 Sir Lamiel is part of the National Collection and is, as a result, in the custody of the National Railway Museum. In practice however, she is cared for, on a day to day basis, by the 5305 Locomotive Association at Loughborough. No.30777 Sir Lamiel is also part of the pool of engines certified for use on the main line and has, over many years, put in some fine performances, particularly on the Settle – Carlisle route and her old stamping grounds on the LSWR routes from London Waterloo to Weymouth via Southampton or Waterloo to Exeter via Salisbury, both routes I know from my own footplate days.
For most of their independent existence the Great Western and the London South Western / Southern Railway were bitter rivals in almost everything from the carriage of Atlantic Mails, to milk traffic and summer specials full of holiday makers. Having worked for BR Southern region I know a little about this rivalry at ground level, so there’s always this little frisson when I see sights like one in the photograph, Southern engine, chocolate and cream rolling stock, and on GW metals. However, Sir Lamiel, or to give him his full title Sir Lamiel of Cardiff, obviously had some GWR in his veins, as he does look quite at home with the rake of GWR stock, approaching Leigh Lane crossing on the West Somerset Railway between Williton and Crowcombe Heathfield.