Maybe, but probably not. The only book I have with clear photographs of similar BR shunters and their siblings is
MARSDEN C, "The Diesel Shunter, A Pictorial Record", Oxford 1981 (OPC)
None in there.
The best source I have for the Nederlandse Spoorwegen locos is the Dutch version of Wikipedia and I will make a guess, some of the detail there applies to what the NYMR calls their "privately built" loco:
NS 500 - Wikipedia
If the NS locos were built by English Electric (I don't entirely trust Wikipedia), I guess the former ICI loco "12139" was too.
This leaves us to find out whether EE customised the locos they built for customers in British industry; and how ICI and the NYMR may have altered this particular one!
I still think the Roco model is a good starting point for a model of a BR or ex-BR loco.