I´m sorry, but he is not. It´s possible that the real loco was scanned for the show, but then it was surely heavily redesigned and simplified as well. Because at the end of the day the CGI model misses a LOT of details (e.g. most of the rivets), which are surprisingly present on the Bachmann model. In addition some proportions and details (e.g. of the bufferbeam and the buffers themselves) are represented quite wrong by the CGI model but are actually accurate on the Bachmann model. All that implies - except for the livery and the face of course - the real Talyllyn as Bachmanns prototype, not the CGI model. Please study applicable pictures for yourself and you will see, what I´m writing about.