Hi Canooknic,
When I had my medical done, the Doctor said that the results would be sent off to Ottawa within 2 weeks then Ottawa would send it on to London....when my application showed up on Ecas as processing in London a week ago it also said 'medical results have been received' but I think it's a bit hit and miss, a lot of people who have already had their Decision Made said that it never said anything about medicals! The idea is that CIC London match your medical results up with your application using the barcode on the medical form you include in your application (the one the doctor gives you....can't remember the number of the form offhand!!)
Hope that helps,
Suze