Hi Pal:
Moving right along, thanks for the clue, that eliminates dozens of makers.
So, that would leave the UK and the US as donors for the chassis I guess.
I see nothing so far from the UK group that looks good so I concentrated on the US brands.
As the vehicle is LHD, that eliminates Sweden for that time period and leaves Danmark, Norway and Finland. Of those,
I would rather think Norway.
For the chassis, I am leaning for the moment towards the so called Chevrolet "Bulldog" COE chassis of the period 1937-1938 or 1939.
A fair number of these were built as busses and particularly for Norway. The nose of these Chevrolets mostly look similar
to your photo.
Over to you