I've just come across this short clip of Kings Cross in 1956. There's nothing exciting about it but does anyone else notice something rather dodgy in it? The film set me thinking, which brings me on to the main question; there were 22 corridor tenders built and found service on some A1/A3's, A4's and the W1. They were obviously used on the non-stop but were they routinely used for their intended purpose on any other trains? 22 tenders just for use on what was essentially two trains a day seems excessive.