They were printed in the UK.
The Straits Dollar was initially printed by Thomas de la Rue of London at their UK plants from 1901 until 1930:
and later, from 1931 to 1935, by Bradbury Wilkinson at their plant in New Malden in Surrey:
The Straits Dollar was replaced by the Malayan dollar in 1939, at an exchange rate of 1:1
In fact, even after independence, ...
When the British regained control of Malaya after World War II, notes were issued in 1945 (dated 1941), in denominations of 1, 5, 10, 50, 100, 1,000 and 10,000 dollars.
It isn't completely clear whether "issued for circulation" meant general public circulation for the highest value banknotes, but there is nothing said to the ...
Here is a blog post from 2006 that identifies Cochrane as
Hon. Cochrane (later to become Lord Chochrane [sic] of Cults)
So it appears his full name was "Thomas George Frederick Cochrane, 2nd Baron Cochrane of Cults"
Sorry nothing on Mr. Marriot so far...
Edit: Here is another source, this one identifying TGC as "later Lord Cochrane"