Is there such a thing as an archive of original British Empire

What period of time are you interested in? Have a look at declassified JIC (joint intelligence committee) papers

>>3227449
probably 18th Century, the sort of time the British Empire really started looking to China as a potential interest

and IIRC the JIC is a post-WW1 organisation so I doubt they would help

Well there was no formal intelligence service in that period, but maybe look at towards documents of the east India company in the national archives

>>3227480
what this dude said, it was more likely private mail, your best bet is biographies
this is something an actual historian could help you with, knowing sources and where to start

>>3227436
ITS CALLED A PORTHOLE YOU FUCKING FAGGOT
REEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE

>>3227541
how do you know its on a boat
it could just be a window on a coastal property that looks out to sea

Got linked to this on /int/
1797 report on China from an East India Company representative - exactly what the OP asks for I think

its long
https://archive.org/details/authenticaccount02stau

>>3227629
Is this what you're after op? Seems good to me