Not getting it so let's try here!
Is it normal that the Flikr share link doesn't work and you have to edit down either the BBCode or Embed code to the bit between https and jpg? Seems a little cumbersome but it also seems to work!
Okay - so I can just sling in the BBCode as it is or I can edit it down a bit to start and finish at the image tags - I think I've sussed it - Horrah!
Test Image
Re: Test Image
[img]cid:1CC8D47C-F5D4-40E4-B3A6-77E3243F4A39[/img]
Re: Test Image
cid:1CC8D47C-F5D4-40E4-B3A6-77E3243F4A39