That's good to see your local is a proper English pub, Wow.
But, in typical pub-business fashion, a pub at the far end of what appears to be the London Tilbury & Southend Railway (bought out by the Midland, later grouped into the LMS) has a sign depicting a GWR loco
I am *not* an anorak, I tell you
You are right, you are not an anorak. Our local station, Prittlewell, is not on the LTSR, which runs into Fenchurch Street from Southend Central, but on the Great Eastern line from Liverpool to Southend Victoria. Southend borough has no fewer than 9 main line railway stations and a 10th, Southend Airport, that was largely paid for by Southend Borough Council, despite it being outside the borough. People who fly into Southend and then leave by train almost invariably head towards London.