EPSG code export setting for DXF

Rhino Rhino for Windows
1

8384.dwg (1.8 MB)

I am tring to help a friend - Attached is a DWG file - I want to export it as DXF but want to export with EPSG code set to 27700 - can anyone shed any light if this is possible?

This file will then be read into Drone Deploy

many thanks
richard

2

Screenshot_1
Screenshot_1948×776 275 KB

example in Drone Deploy then adds as an overlay