Hello David
Thanks for swinging by. As Paul already explained, he has built a great deal of content for me over the past ten years. As with most lines, the Pickering to Whitby route via Grosmont changed significantly between 1900 and 1950. If you rode in a non-corridor carriage after 1952 then the odds are it was either a Thomspon era carriage (which Paul has built several examples for me) or a Gresley era carriage (which so far I have not got round to have Paul build for me).
Around 1899 the NER built a range of 45ft bogie carriages with clerestory roof specifically for the Pickering to Whitby and the locomotives permitted on the line were restricted to only a few types "due to the curvature of the line". After 1904 some 49ft arc roof carriages began to appear after being cascaded from their previous stamping ground of North Tyneside. This was due to electrification. The restrictions relating to locomotives remained in force. Around 1910 through carriages from London Kings Cross began to appear, with one set being provided by the NER and one set provided by the GNR. Again, the restrictions on the classes of locomotives on the line remained.
It was down to the LNER to ease restrictions on the locos, driven by the scrapping of elderly former NER locos. It has never been determined what, if any, measures were taken to "ease the curvature" which were allegedly the reason for the NER era restrictions.