Thanks Michael, but I remember when I applied at the London Embassy last year (before the online process), and took all the originals in person to the Embassy, the immigration officer refused to accept the original medical document and demanded that copy of it be notarised. This was the original medical form stamped by the doctor. So it seems to be that they make it up as they go along, and to have notarised copies of all documents just in case.
I have had so many problems with this new Evisa system. Previously I was unable to have the upload documentation option at step 5. Until I found out from another forum that .. under the option "occupation" I should put "retired", even though I am currently working and intend retiring once I have the visa. The old system was much easier.